Handbook on desertification indicators.
Reining,Priscilla
Handbook on desertification indicators. - Washington AAAS 1978 - 141
Desert,Arid,Semi Arid Desertification
574.52652
Handbook on desertification indicators. - Washington AAAS 1978 - 141
Desert,Arid,Semi Arid Desertification
574.52652