TY  - BOOK
AU  - HUDSON NORMAN W.
TI  - SOIL AND WATR CONSERVATION IN SEMI- ARID AREAS
SN  - 9251026088
AV  - 631.450913/HUD 7
U1  - 631.450913/HUD 
PY  - 1987///
CY  - ROME
PB  - UNITED NATIONS
ER  -