Vytlačiť
1. Extension, technology, and efficiency in agriculture in Sub-Saharan Africa
:EVENSON, Robert E. Extension, technology, and efficiency in agriculture in Sub-Saharan Africa. New Haven : Yale University Press, 1998. S.105-119. Center Paper, No. 518. [Počet ex. : 1, z toho voľných 1, prezenčne 0]