UNESCO
Map of the world distribution of Arid regions: Explanatory notes - Paris UNESCO 1977 - 54 p.
9231014846
Arid regions
577.4(084.3) N79
Map of the world distribution of Arid regions: Explanatory notes - Paris UNESCO 1977 - 54 p.
9231014846
Arid regions
577.4(084.3) N79