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Subjects agriculture Remove constraint agriculture: agriculture Subjects fertilizers Remove constraint fertilizers: fertilizers Series Yearbook of agriculture Remove constraint Yearbook of agriculture: Yearbook of agriculture

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1. Alternative agriculture.

Author:: Cook, K.A.
Subject:: agriculture , alternative farming , fertilizers , pesticides , crop rotation , crops , livestock , United States
Physical description:: p. 244-248.
Collection:: Rural Development Publications Collection
Series:: Yearbook of agriculture
Part Of:: Yearbook of agriculture. 1987

2. Technology unlocks cropland productivity.

Author:: Carlson, C.W.
Subject:: agriculture , crop production , technology , irrigation , fertilizers , rain , United States
Physical description:: p. 309-314.
Collection:: Rural Development Publications Collection
Series:: Yearbook of agriculture
Part Of:: Yearbook of agriculture. 1987