TY  - BOOK
AU  - Eckhoim Erik
AU  -  Brown Laster R
TI  - Spreading deserts : The hand of man
T2  - World Watcj Paper. 13
U1  - "U214, L7/UN" 
PY  - 1977///
CY  - Washington
PB  - World Watch Institute     
KW  - Geomorphology
ER  -