TY  - BOOK
ED  - Soil Conservation Society of America. Ankeny, Iowa
TI  - Soil erosion, prediction and control: : proceedings of a national conference..
T2  - Special publication
U1  - 631.455 
PY  - 1977///
CY  - Ankeny, Iowa
PB  - The society
KW  - Erosión
KW  - Prevención y control
ER  -