Agrarian research and training institute
A study of Agricultural extension, training and communication in Colombo district / With special reference to six selecetd villages in the class II coconut area - Colombo Agrarian research and training institute 1975 - vi, 29 p. - Research study series no.15 .
69167
338.9 / SRI
A study of Agricultural extension, training and communication in Colombo district / With special reference to six selecetd villages in the class II coconut area - Colombo Agrarian research and training institute 1975 - vi, 29 p. - Research study series no.15 .
69167
338.9 / SRI