Farming systems research and extension
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Main Authors: | 130754 Waugh, R.K., 78035 Hildebrand, P.E., 42872 Andrew, C.O., 58513 Compton, J.L. |
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Format: | Texto biblioteca |
Language: | eng |
Published: |
Boulder, Colo. (EUA) Lynne Rienner Pub
1989
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