Soil erosion and conservation in the tropics : proceedings
Symposium on Soil Erosion and Conservation inthe tropics, Fo
Soil erosion and conservation in the tropics : proceedings - Madison, ASA SSSA 1982 - 23cm. 149 - (ASA special publication, no.43) .
SOIL EROSION - - TROPIOCS - - CONGRESSES
SOIL CONSERVATION - - TROPICS - - CONGRE SOIL EROSION - - TROPIOCS - - CONGRESSES
631. 450. 913 S99S
Soil erosion and conservation in the tropics : proceedings - Madison, ASA SSSA 1982 - 23cm. 149 - (ASA special publication, no.43) .
SOIL EROSION - - TROPIOCS - - CONGRESSES
SOIL CONSERVATION - - TROPICS - - CONGRE SOIL EROSION - - TROPIOCS - - CONGRESSES
631. 450. 913 S99S