In addition to Terence's recommendations, I would add:
             Guide to performance evaluation of serials vendors
                 / Association for Library Collections & Technical
                 Services, Serials Section Acquisitions Committee
                  Chicago : American Library Association, 1997
                 Acquisitions Guidelines No. 10

                 kent mulliner, ohio university libraries

K. Mulliner       Collection Development Coordinator

Ohio University Libraries               Phone: 740-593-2707
Athens, OH 45701-2978, USA              FAX:    740-593-2708
mulliner@ohio.edu

At 03:15 PM 8/31/00 -0400, Terence Rose wrote:
>Hi Phyllis,
>
>The sources I have used are "Guidelines for Handling Library Orders"
>Acquisition Guidelines no.7 by Serials Section Acquisitions Committee of
>the Association for Library Collections & Technical Services (the source
>is dated but it will give you a good overview) and an excellent source
>that I have used is the "RFP Process: Effective Management of the
>Acquisition of Library Materials" by Frances C. Wilkinson and Connie
>Thorson published by Libraries Unlimited. ISBN 1-5-56308-481-3 (PS: I
>reviewed this book in Serials Review) this book will give you examples of
>criteria for choosing a Serials Vendor.
>
>These two sources should provide information and point to other sources
>for further research.
>
>Terence Lionel Rose
>Serials Librarian
>Acquisitions, Documents, Serials Team
>Technical Services Division
>Library of Michigan
>717 W. Allegan St.
>P.O. Box 30007
>Lansing, MI 48909
>(517) 373-5818
>trose@libofmich.lib.mi.us
>
> >>> PHYLLIS@NYMC.EDU 08/31/00 12:16PM >>>
>What criteria is used to choosing a Serials vendor?
>
>Phyllis Niles
>New York Medical College
><PHYLLIS@NYMC.EDU>