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Comparative farming systems
Turner, Billie L. (ed.) - 1987
Persistent link: https://www.econbiz.de/10008731269
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The earth as transformed by human action : global and regional changes in the biosphere over the past 300 years
Turner, Billie L. (contributor) - 1990
Persistent link: https://www.econbiz.de/10004107083
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Comparative farming systems
Turner, Billie L. (contributor) - 1987
Persistent link: https://www.econbiz.de/10004145773
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Population growth and agricultural change in Africa : [... workshop at the University of Florida, Gainesville, April 30 - May 2, 1988 ...]
Turner, Billie L. (ed.); Hydén, Göran (contributor);  … - 1993
Persistent link: https://www.econbiz.de/10013533579