Yazar
david g acker
2 cilt bulundu.
Cilt sonuçları
Malawi Agricultural Research and Extension Project
David G. Acker · Oregon State University Office of International Research and Development
24 sayfa · 1992
Malawi Agricultural Research and Extension Project / Agriculture / Agricultural extension work / Research
Relevance of U. S. graduate education in agriculture to careers in agricultural development of East African agriculturalists
David G. Acker · Yayınevi bilinmiyor
162 sayfa · 1988
Agricultural education / Training of / Agriculturists / Agricultural students