TY  - BOOK
AU  - Unesco symposium on teh problems of teh arid Zone (paris)
ED  - Unesco symposium on teh problems of teh arid Zone (paris)
TI  - Proceedings
T2  - Arid zone research; 18
U1  - U671:1911p1:N60, K2-;1 
PY  - 1962///
KW  - GEOGRAPHY
ER  -