-
71
-
72
-
73
A general equilibrium analysis of the effects of farm mechanization on wheat and rice production in Pakistan.
Được phát hành 1987Luận văn -
74
Policies and strategies for agricultural mechanization in RNAM participating qcountries.
Được phát hành 1987Sách -
75
-
76
-
77
-
78
Agricultural mechanization and the evolution of farming systems in sub-Saharan Africa
Được phát hành 1987Sách -
79
-
80


