Collion, Marie-Helene. An approach to long-term program design : including priority setting and human resource allocation - The Hague : International Service for National Agricultural Research, 1991 - 53 p. - Working paper ; 37 . - Working paper ; 37 . 56-32 LCCN: 5094 Subjects--Topical Terms: Agricultura--Investigación.Política agrícola.