Zoekresultaten
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1
The Philippines recommends for conservation farming in the sloping lands, vol. 1 contour farming.
Gepubliceerd in 2008Boek -
2
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3
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4
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5
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6
Evaluation of various management practices for watershed erosion control
Gepubliceerd in 1999Thesis -
7
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8
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9
The politics of agriculture; soil conservation and the struggle for power in rural America
Gepubliceerd in 1952Boek -
10


