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Frederick R. Troeh

3 books

Books by Frederick R. Troeh

Dictionary of agricultural and environmental science / Frederick R. Troeh and Roy L. Donahue
Dictionary of agricultural and environmental science / Frederick R. Troeh and Roy L. Donahue
2003
Los suelos y su fertilidad
Los suelos y su fertilidad
1982
Soil and water conservation fo
Soil and water conservation for productivity and environmental protection
1980