TY  - BOOK
ED  - International Conference on Arid Lands in a Changing World 
ED  - Dregne, H. E. (
TI  - Arid lands in transition
T2  - Publication of the American Association for the Advancementof Science
AV  - S612.2 I58 1969
PY  - 1970///
CY  - Washington, D.C.
PB  - American Association for the Advancementof Science
N1  - Incluye bibliografia
ER  -