TAC Secretariat note examining experience to date in conducting quinquennial reviews, and on the basis of feedback from the five centers so far reviewed and from chairmen of review panels, recommending changes to the terms of reference and procedures of quinquennial reviews. Annex1 - The original terms of reference for quinquennial reviews. Annex II - Recommendations from the CGIAR Review Committee relevant to quinquennial reviews. Annex III - Draft of revised terms of reference for quinquennial reviews. Annex IV - Draft guidelines for future quinquennial reviews. Agenda document, TAC Eighteenth Meeting, February 1978.