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

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

 

                                       
       1.  An individual's account              The individual
 
       2.  Two or more individuals              The actual owner of the
           (joint account)                      account or, if combined
                                                funds, the first
                                                individual on the
                                                account(1)
 
       3.  Husband and wife                     The actual owners of the
           (joint account)                      account or, if joint
                                                funds, either person(1)
 
       4.  Custodian account of a minor         The minor(2)
           (Uniform Gift to Minors Act)
 
       5.  Adult and minor                      The adult or, if the
           (joint account)                      minor is the only
                                                contributor, the
                                                minor(1)
 
       6.  Account in the name of guardian or   The ward, minor, or
           committee for a designated ward,     incompetent person(3)
           minor, or incompetent person
 
       7.  a.         The usual revocable       The grantor-trustee(1)
                      savings trust account
                      (grantor is also
                      trustee)
 
           b.         So-called trust account   The actual owner(1)
                      that is not a legal or
                      valid trust under state
                      law
 
       8.  Sole proprietorship account          The owner(4)
 
       9.  A valid trust, estate, or pension    The legal entity (Do not
           trust                                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, or            The organization
           educational organization account
 
      12.  Partnership account held in the      The partnership
           name of the business
 
      13.  Association, club, or other          The organization
           tax-exempt organization
 
      14.  A broker or registered nominee       The broker or nominee
 
      15.  Account with the Department of       The public entity
           Agriculture in the name of a public
           entity (such as a State or local
           government, school district, or
           prison) that receives agricultural
           program payments

 

                                       
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(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) Circle the ward's, minor's or incompetent person's name and furnish such
    person's social security number.
 
(4) Show your individual name. You may also enter your business name. You may
    use either your Social Security number or your Employer Identification
    number.
 
(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 Number Card (for
individuals), or Form SS-4, Application for Employer Identification Number (for
businesses and all other entitles), at the local office of the Social Security
Administration or the Internal Revenue Service (the "IRS") 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) of the Code.
 
 - The United States or any agency or instrumentality thereof.
 
 - A State, the Disctrict of Columbia, a possession of the United States, or any
    subdivision or 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. 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)(1) of the Code.
 
 - An entity registered at all times during the tax year under the Investment
    Company Act of 1940.
 
 - A foreign central bank of issue.
 
    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
    which 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 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 non-resident aliens.
 
 - Payments on tax-free covenant bonds under Section 1451 of the Code.
 
 - Payments made by certain foreign organizations.
 
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, SIGN AND DATE THE
FORM AND RETURN IT TO THE PAYER. IF YOU ARE A NON-RESIDENT ALIEN OR A FOREIGN
ENTITY NOT SUBJECT TO BACKUP WITHHOLDING, FILE WITH THE PAYER A COMPLETED
INTERNAL REVENUE FORM W-8 (CERTIFICATE OF 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 Sections 6041, 6041A(a), 6042, 6044, 6045, 6049,
and 6050A and 6050N of the Code and the regulations promulgated thereunder.
 
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 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 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