Portugal. Ministério da Agricultura e Pescas. Direcção Geral de Extensão Rural Some remarks about rural extension / Portuguese Ministry of Agriculture and Fisheries. General Directorate of Rural Extension

Some remarks about rural extension / Portuguese Ministry of Agriculture and Fisheries. General Directorate of Rural Extension . - xxa Lisbon xxa-fimyyc Portuguese Ministry of Agriculture and Fisheries. General Directorate of Rural Extension yyc-fim, 1979 . - 3, 17, 4 p. 80 cm
Brochado
Sociedade rural
Portugal
Extensão rural