The proceedings of the arid zone proceedings
Symposium on the Problems of the Arid Zone
- Paris UNESCO 1962
- xii, 431 p. 25 cm.
- Arid zone research xviii .
Arid regions. Problems - Symposium
Arid regions - Research.
551.415 / SYM-P
Arid regions. Problems - Symposium
Arid regions - Research.
551.415 / SYM-P