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.



- ----------------------------------------------------------------------
For this type of account:                  Give the
                                           SOCIAL SECURITY
                                           number of--

- ----------------------------------------------------------------------
                                        
1.  Individual                             The individual

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

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

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

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

5.  Sole proprietorship                    The owner (3)
- ----------------------------------------------------------------------


- ----------------------------------------------------------------------
For this type of account:                  Give the
                                           EMPLOYER
                                           IDENTIFICATION
                                           number of--

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

6.  Sole proprietorship                    The owner (3)

7.  A valid, trust, estate,                Legal entity (4)
    or pension trust

8.  Corporate                              The corporation

9.  Association, club,                     The organization
    religious, charitable
    educational or other
    tax-exempt
    organization

10. Partnership                            The partnership

11. A broker or registered                 The broker or nominee
    nominee

12. 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 first and circle the name of the person whose number you furnish.

(2)  Circle the minor's name and furnish the minor's social security number.

(3)  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
     your employer identification number (if you have one).

(4)  List first and circle the name of the legal trust, estate, or pension
     trust. (Do not furnish the identifying number of the personal
     representative or trustee unless the legal entity itself is not designated
     in the account title.)


            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 Number Card, or Form
SS-4, Application for Employer Identification Number, at the local office of the
Social Security Administration or the Internal Revenue Service and apply for a
number.
Payees Exempt from Backup Withholding
The following is a list of payees exempt from backup withholding and for which
no information reporting is required.  For interest and dividends, all listed
payees are exempt except item (9).  For broker transactions, payees listed in
items (1) through (13) and a person registered under the Investment Advisers Act
of 1940 who regularly acts as a broker are exempt.  Payments subject to
reporting under sections 6041 and 6041A are generally exempt from backup
withholding only if made to payees described in items (1) through (7), except a
corporation that provides medical and health care services or bills and collects
payments for such services is not exempt from backup withholding or information
reporting. Only payees described in items (2) through (6) are exempt from backup
withholding for barter exchange transactions and patronage dividends.
(1)  A corporation.
(2)  An organization exempt from tax under section 501(a), or an individual
     retirement plan or custodial account under section 403(b)(7).
(3)  The United States or any agency or instrumentality thereof.
(4)  A State, the District of Columbia, a possession of the United States, or
     any subdivision or instrumentality thereof.
(5)  A foreign government, a political subdivision of a foreign government, or
     an agency or instrumentality thereof.
(6)  An international organization or any agency or instrumentality thereof.
(7)  A foreign central bank of issue.
(8)  A dealer in securities or commodities required to register in the U.S. or a
     possession of the U.S.
(9)  A futures commission merchant registered with the Commodity Futures Trading
     Commission.
(10) A real estate investment trust.
(11) An entity registered at all times under the Investment Company Act of 1940.
(12) A common trust fund operated by a bank under section 584(a).
(13) A financial institution.
(14) A middleman known in the investment community as a nominee or listed in the
     most recent publication of the American Society of Corporate Secretaries,
     Inc. Nominee List.
(15) An exempt charitable remainder trust, or a non-exempt trust described in
     section 4947.
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.
 . Payments to partnerships not engaged in a trade or business in the U.S. and
  which have at least one nonresident partner.
 . Payments of patronage dividends not paid in money.
 . Payments made by certain foreign organizations.
 . Section 404(k) payments made by an ESOP.
     Interest payments that are generally exempt from back-up withholding
include:
 . 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).
 . Payments described in section 6049(b)(5) to nonresident aliens.
 . Payments on tax-free covenant bonds under section 1451.
 . Payments made by certain foreign organizations.
 . Mortgage or student loan interest paid to you.
Exempt payees described above should file 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 AND RETURN IT TO
THE PAYER. IF THE PAYMENTS ARE INTEREST, DIVIDENDS, OR PATRONAGE DIVIDENDS, ALSO
SIGN AND DATE THE FORM.
     Certain payments other than interest, royalties, and patronage dividends
that are not subject to information reporting are also not subject to backup
withholding. For details, see the regulations under sections 6041, 6041A(a),
6045, and 6050A.
Privacy Act Notice. -- Section 6109 requires most recipients of dividend,
interest, or other payments to give taxpayer identification numbers to payers
who must report the payments to IRS.  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, dividend, 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 correct 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 willful neglect.
(2) Civil Penalty for False Information with Respect to Withholding. -- If you
make a false statement with no reasonable basis which results in no imposition
of backup withholding, you are subject to a penalty of $500.
(3) 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.