-
71
The diversion of land conservation in a period of farming contraction
Baskı/Yayın Bilgisi 1991Kitap -
72
-
73
Soil conservation in developing countries project and policy intervention
Baskı/Yayın Bilgisi 1990Kitap -
74
-
75
-
76
-
77
-
78
-
79
Participatory resource development improving farmers quality of life through a soil conservation program.
Baskı/Yayın Bilgisi 1989Kitap -
80
Fragile lands of Latin America strategies for sustainable development
Baskı/Yayın Bilgisi 1989Kitap