Den Biggelaar, Christoffel Farmer experimentation and innovation : a case study of knowledge generation processes in agroforestry systems in Rwanda / by Christ offel den Biggelaar - Rome : FAO, 1996 - xi, 123 p. : ill. ; 30 cm. - Community forestry case study series ; 12 . Includes bibliographical references (p. 116-120). Subjects--Topical Terms: Agroforestry--Rwanda. Dewey Class. No.: 634.99