Improving agricultural extension : a reference manual /
edited by Burton E. Swanson, Robert P. Bentz, Andrew J. Sofranko
- ix, 220 pages : illustrations ; 30 cm
Updated ed. of: Agricultural extension. 2nd ed. 1984 "Prepared under the guidance of the Extension, Education, and Communication Service, Research, Extension, and Training Division, Sustainable Development Department." "M-67."