Transferring technology for small-scale farming : proceedings of a symposium
· sponsored by Divisions A-4 and A-6 of the American Societyof Agronomy in Chicago, Illinois, 3-8 Dec. 1978 ; editor Noble R. Usherwood ; editor-in-chief Matthias Stelly ; managing editor David M. Kral ; assistant editor Mary Kay Cousin
Bok Engelsk 1981