na INLIS000000000051921 20211009113000 0010-1021000174 211009 g 0 eng Agricultural extension : a reference manual (second edition) / Edited: Burton E Swanson FOOD AND AGRICULTURE ORGANIZATION OF THE UNITED NATIONS Rome : FAO, 1984 xi, 262 p. : ill. ; 30 cm. 92-5-101504-X 373.68 AGRICULTURAL EXTENSION EXTENSION ACTIVITIES EXTENSION PROGRAMMES 373.68 FOO a Second Ed.