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

GUIDELINES FOR DETERMINING THE PROPER NAME AND 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 name and
number to give the payer.




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


 1.  An individual account            The individual
                                

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

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

 4.  a.  The Usual revocable savings  The grantor-trustee(1)
         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

 5.  Sole proprietorship account      The owner(3)





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


 6.  A valid trust, estate, or  The legal entity(4)
                          
     pension trust

 7.  Corporate account          The corporation

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

 9.  Partnership                The partnership

10.  A broker or registered     The broker or nominee
     nominee

11.  Account with the Depart-   The public entity
     ment of Agriculture in
     the name of a public
     entity (such as a State
     or local government,
     school district, or
     prison) that receives
     agricultural program pay-
     ments


(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
    Employer Identification Number.

(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.)

NOTE: If no name is circled when more than one name is listed, 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), Form W-7, Application for an IRS Individual Taxpayer
Identification Number (for individuals who are not eligible to obtain an SSN but
who must furnish a TIN), or Form SS-4, Application for Employer Identification
Number (for businesses 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 WITHOLDING

The following is a list of payees specifically exempted from backup withholding
depending upon the type of payment (see below):

(1) A corporation.

(2) An organization exempt from tax under section 501(a), or an IRA, or a
    custodial account under section 403(b)(7), if the account satisfies the
    requirements of section 401(f)(2).

(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
    any 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 United
    States, the District of Columbia, or a possession of the United States.

(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 during the tax year 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) A trust exempt from tax under section 664 or described in section 4947.

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.

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" IN PART II OF THE FORM, AND RETURN IT TO
THE PAYER. If you are a nonresident alien or a foreign entity not subject to
backup withholding, give the payer a completed Form W-8BEN Certificate of
Foreign Status of Beneficial Owner for United States Tax Withholding.

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. 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 percent 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) 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.