EXHIBIT (a)(5)(iv)
            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--
- ------------------------------------------------
                            
1. An individual's account     The individual
2. Two or more individuals     The actual owner
 (joint account)               of the account
                               or, if combined
                               funds, the first
                               individual on the
                               account(1)
3. Husband and wife (joint     The actual owner
 account)                      of 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
 account)                      the minor is the
                               only contributor,
                               the minor(1)
6. Account in the name of      The ward, minor,
 guardian or committee for a   or incompetent
 designated ward, minor, or    person(3)
 incompetent person
7. a. A revocable savings      The grantor-
      trust account (in which  trustee(1)
      grantor is also
      trustee)
b. Any "trust" account that    The actual
   is not a legal or valid     owner(1)
   trust under State law
8. Sole proprietorship         The owner(4)
 account



                               Give the EMPLOYER
For this type of account:      IDENTIFICATION
                               number of --
                                        --------
                            
 9. A valid trust, estate, or  The legal entity
  pension                      (do 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 or   The organization
  educational organization
  account
12. Partnership account held   The partnership
  in the name of the business
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 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 the name of the owner. If the owner does not have an employer
    identification number, furnish the owner's social security 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 do not have a taxpayer identification number or you do not know your
number, obtain Form SS-5, Application for a Social Security Number Card (for
resident individuals), Form SS-4, Application for Employer Identification
Number (for businesses and all other entities), or Form W-7 for International
Taxpayer Identification Number (for alien individuals required to file U.S.
tax returns), at an office of the Social Security Administration or the
Internal Revenue Service.

To complete Substitute Form W-9, if you do not have a taxpayer identification
number, write "Applied For" in the space for the taxpayer identification
number in Part 1, sign and date the Form, and give it to the requester.
Generally, you will then have 60 days to obtain a taxpayer identification
number and furnish it to the requester. If the requester does not receive your
taxpayer identification number within 60 days, backup withholding, if
applicable, will begin and will continue until you furnish your taxpayer
identification number to the requester.

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), or an individual re-
    tirement plan, or a custodial account under section 403(b)(7).
  . The United States or any agency or instrumentality thereof.
  . A state, the District of Columbia, a possession of the United States, or
    any political subdivision or instrumentality thereof.
  . A foreign government or a political subdivision, agency or instrumentality
    thereof.
  . An international organization or any agency or instrumentality thereof.
  . A registered dealer in securities or commodities registered in the United
    States or a possession of the United States.
  . A real estate investment trust.
  . A common trust fund operated by a bank under section 584(a).
  . An exempt charitable remainder trust, or a non-exempt trust described in
    section 4947(a)(1).
  . An entity registered at all times during the tax year under the Investment
    Company Act of 1940.
  . A foreign central bank of issue.
  . Unless otherwise noted herein, all references below to section numbers or
    to regulations are references to the Internal Revenue Code and the regula-
    tions promulgated thereunder.
 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 United
    States 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 made to a nominee.
 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 (i) this interest is $600 or more, and
    (ii) the interest is paid in the course of the payer's trade or business
    and (iii) you have not provided your correct taxpayer identification num-
    ber to the payer.
  . Payments of tax-exempt interest (including exempt-interest dividends under
    section 852).
  . Payments described in section 6049(b)(5) to non-resident aliens.
  . Payments on tax-free covenant bonds under section 1451.
  . Payments made by certain foreign organizations.
  . Payments made to a nominee.
Exempt payees described above should file a Substitute 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.
 Certain payments other than interest, dividends, and patronage dividends that
are not subject to information reporting are also not subject to backup with-
holding. For details, see the regulations under sections 6041, 6041A(a), 6045,
and 6050A.
Privacy Act Notices. Section 6109 requires most recipients of dividends, in-
terest, or other payments to give taxpayer identification numbers to payers
who must report the payments to the IRS. The IRS uses the numbers for identi-
fication purposes and to help verify the accuracy of your tax return. 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 identi-
fication 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 sub-
ject to a penalty of $50 for each such failure unless your failure is due to
reasonable cause and not to willful neglect.
(2) Failure to Report Certain Dividend and Interest Payments.--If you fail to
include any portion of an includible payment for interest, dividends, or pat-
ronage dividends in gross income and such failure is due to negligence, a pen-
alty of 20% is imposed on any portion of an underpayment attributable to the
failure.
(3) Civil Penalty for False Statements 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.
(4) Criminal Penalty for Falsifying Information.--If you falsify certifica-
tions or affirmations, you are subject to criminal penalties including fines
and/or imprisonment.

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