Epic-erosion productivity impact calculater

Sharpley, A.N

Epic-erosion productivity impact calculater - Washington, U.S Department of Agriculture 1990 - 27cm. 2v - (U.S Department of agriculture technical bulletion no. 1768) .


SOIL EROSION - - SIMULATION METHODS I.

SOIL EROSION - - SIMULATION METHODS I.

631.45 S34E

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