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
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