Institutions and mountain development
1990
Rural development
The nature of development : a report from the rural tropics on the quest for sustainable economic growth
1992
Stone, Roger D. |
Management plan Simen Mountains National Park and Surrounding Rural Area
1986
Hurni, Hans |
Recherche et développement en agriculture : développement en zones arides
1980
Billaz, R, |
Dufumier, M. |
Integrated rural energy planning
1985
ElMahgary, Yehia |
Biswas, Asit K. |
Parc national du Tassili N'Ajjer : conservation exploitation
1987
Bousquet, Bernard |