TY  - BOOK
AU  - El-Swaify,S.A.
TI  - Soil erosion and conservation
SN  - 935734112
U1  - 631.455/E499/08.3.145 
CY  - #¿NOMBRE?
KW  - SOIL EROSION // CONGRESSES. SOIL CONSERVATION // CONGRESSES. SEDIMENT CONTROL // CONGRESSES
ER  -