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2
-
Pastoralists : equality, hierarchy, and the state / Philip Carl Salzman.
- Westview,
- cop. 2004.
- Boulder, CO [etc.] :
-
Natural gas : its role and potential in economic development / ed. by Walter Vergara, Nelson E. Hay and Carl W. Hall.
- Westview,
- 1990.
- Boulder, CO [etc.] :