GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9

    GUIDELINES FOR DETERMINING THE PROPER IDENTIFICATION NUMBER TO GIVE THE
PAYER.  Social Security numbers have nine digits separated by two hyphens: i.e.
000-00-0000. Employer identification numbers have nine digits separated by only
one hyphen, i.e. 00-0000000. The table below will help determine the number to
give the payer.



- ---------------------------------------------------
                       
                             GIVE THE
                             SOCIAL SECURITY
FOR THIS TYPE OF ACCOUNT:    NUMBER OF--
- ---------------------------------------------------

1.   An individual's         The individual
     account

2.   Two or more             The actual owner of
     individuals (joint      the account or, if
     account)                combined funds, any
                             one of the
                             individuals(1)

3.   Husband and wife        The actual owner of
     (joint account)         the account or, if
                             joint funds, either
                             person(1)

4.   Custodian account of a  The minor(2)
     minor (Uniform Gift to
     Minors Act)

5.   Adult and minor (joint  The adult or, if the
     account)                minor is the only
                             contributor, the
                             minor(1)

6.   Account in the name of  The ward, minor, or
     guardian or committee   incompetent person(3)
     for a designated ward,
     minor, or incompetent
     person

7.   a. The usual revocable  The grantor-trustee(1)
       savings trust
       account (grantor is
       also trustee)

     b. So-called trust      The actual owner(1)
       account that is not
       a legal or valid
       trust under State
       law

- ---------------------------------------------------

                             GIVE THE
                             EMPLOYER
                             IDENTIFICATION
FOR THIS TYPE OF ACCOUNT:    NUMBER OF--
- ---------------------------------------------------
                       

8.   Sole proprietorship     The owner(4)
     account

9.   A valid trust, estate,  The legal entity (do
     or pension trust        not furnish the
                             identifying number of
                             the personal
                             representative or
                             trustee unless the
                             legal entity itself is
                             not designated in the
                             account title)(5)

10.  Corporate account       The corporation

11.  Religious, charitable,  The organization
     educational or
     organization account

12.  Partnership account     The partnership
     held in the name of
     the partnership

13.  Association, club, or   The organization
     other tax-exempt
     organization

14.  A broker or registered  The broker or nominee
     nominee

15.  Account with the        The public entity
     Department of
     Agriculture in the
     name of a public
     entity (such as a
     State or local
     government, school
     district, or prison)
     that receives
     agricultural program
     payments


- ---------------------------------------------
- ---------------------------------------------

(1) List all names first and circle the name of the person whose number you
    furnish. If only one person on a joint account has a Social Security number,
    that person's number must be furnished.

(2) Circle the minor's name and furnish the minor's Social Security number.

(3) Circle the ward's, minor's or incompetent person's name and furnish such
    person's Social Security number.

(4) You must show your individual name, but you may also enter your business or
    "doing business as" name. You may use either your Social Security number or
    Employer Identification number (if you have one).

(5) List first and circle the name of the legal trust, estate, or pension trust.

NOTE:  If no name is circled when there is more than one name, the number will
       be considered to be that of the first name listed.

            GUIDELINES FOR CERTIFICATION OF TAXPAYER IDENTIFICATION
                         NUMBER ON SUBSTITUTE FORM W-9
                                     PAGE 2

OBTAINING A NUMBER

If you don't have a taxpayer identification number or you don't know your
number, obtain Form SS-5, Application for a Social Security Card, or Form SS-4,
Application for Employer Identification Number (for business and all other
entities), at the local office of the Social Security Administration or the
Internal Revenue Service and apply for a number.

PAYEES EXEMPT FROM BACKUP WITHHOLDING

Payees specifically exempted from backup withholding on ALL payments include the
following:

    - A corporation.

    - A financial institution.

    - An organization exempt from tax under section 501(a) of the Internal
      Revenue Code of 1986, as amended (the "Code"), or an individual retirement
      plan, or a custodial account under Section 403(b)(7), if the account
      satisfies the requirements of Section 401(l)(7).

    - The United States of any agency or instrumentalities.

    - A State, the District of Columbia, a possession of the United States, or
      any political subdivision of instrumentality thereof.

    - A foreign government, a political subdivision of a foreign government, or
      any agency or instrumentality thereof.

    - An international organization or any agency, or instrumentality thereof.

    - A registered dealer in securities or commodities registered in the U.S.,
      the District of Columbia or a possession of the U.S.

    - A real estate investment trust.

    - A common trust fund operated by a bank under section 584(a) of the Code.

    - An exempt charitable remainder trust, or a non-exempt trust described in
      Section 4947(a)(l) of the Code.

    - An entity registered at all times under the Investment Company Act of
      1940.

    - A foreign central bank of issue.

    - A middleman known in the investment community as a nominee or who is
      listed in the most recent publication of the American Society of Corporate
      Securities, Inc. Nominee List.

Payments of dividends and patronage dividends not generally subject to backup
withholding include the following:

    - Payments to nonresident aliens subject to withholding under Section 1441
      of the Code.

    - Payments to partnerships not engaged in a trade or business in the U.S.
      and what have at least one nonresident partner.

    - Payments of patronage dividends where the amount received is not paid in
      money.

    - Payments made by certain foreign organizations.

    - Payments made to a nominee.

    - Section 404(k) payments made by an ESOP.

    Payments of interest not generally subject to backup withholding include the
following:

    - Payments of interest on obligations issued by individuals. NOTE: You may
      be subject to backup withholding if this interest is $600 or more and is
      paid in the course of the payer's trade or business and you have not
      provided your correct taxpayer identification number to the payer.

    - Payments of tax-exempt interest (including exempt-interest dividends under
      Section 852 of the Code).

    - Payments described in Section 6049(b)(5) of the Code to nonresident
      aliens.

    - Payments on tax-free covenant bonds under Section 1451 of the Code.

    - Payments made by certain foreign organizations.

    - Payments made to a nominee.

    - Mortgage interest paid to you.

Exempt payees described above should file a Form W-9 to avoid possible erroneous
backup withholding. FILE THIS FORM WITH THE PAYER, FURNISH YOUR TAXPAYER
IDENTIFICATION NUMBER, WRITE "EXEMPT" ON THE FACE OF THE FORM. SIGN AND DATE THE
FORM AND RETURN IT TO THE PAYER. IF YOU ARE A NONRESIDENT ALIEN OR A FOREIGN
ENTITY NOT SUBJECT TO BACKUP WITHHOLDING FILE WITH A PAYER A COMPLETED INTERNAL
REVENUE FORM W-8 (CERTIFICATE FOREIGN STATUS).

Certain payments other than interest, dividends, and patronage dividends, that
are not subject to information reporting are also not subject to backup
withholding. For details, see the regulations under Section 6041, 6041A(2), 6045
and 6050A of the Code and the regulations promulgated thereunder.

PRIVACY ACT NOTICE--Section 6109 requires most recipients of dividends,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to the IRS. The IRS uses the numbers for
identification purposes. Payers must be given the numbers whether or not
recipients are required to file tax returns. Payers must generally withhold 31%
of taxable interest, dividends and certain other payments to a payee who does
not furnish a taxpayer identification number to a payer. Certain penalties may
also apply.

PENALTIES

(1) PENALTY FOR FAILURE TO FURNISH TAXPAYER IDENTIFICATION NUMBER.--If you fail
to furnish your taxpayer identification number to a payer, you are subject to a
penalty of $50 for each such failure unless your failure is due to reasonable
cause and not to wilful neglect.

(2) FAILURE TO REPORT CERTAIN DIVIDEND AND INTEREST INFORMATION.-- If you fail
to include any portion of an includible payment for interest, dividends or
patronage dividends in gross income, such failure will be treated as being due
to negligence and will be subject to a penalty of 5% on any portion of an
underpayment attributable to that failure unless there is clear and convincing
evidence to the contrary.

(3) CIVIL PENALTY FOR FALSE INFORMATION WITH RESPECT TO WITHHOLDING--If you make
a false statement with no reasonable basis that results in no imposition of
backup withholding, you are subject to a penalty of $500.

(4) CRIMINAL PENALTY FOR FALSIFYING INFORMATION.-- Willfully falsifying
certifications or affirmations may subject you to criminal penalties including
fines and/or imprisonment.

FOR ADDITIONAL INFORMATION CONTACT YOUR TAX CONSULTANT OR THE INTERNAL REVENUE
SERVICE.