Management of Semi - Arid Ecosystems
Walker, B. H,
Management of Semi - Arid Ecosystems Textual Documents B. H. Walker - Amsterdam: Elsevier Science Publishing Co., 1979. - 398.
0444417591
Arid Regions Economics of land & energy Land Use
333
Management of Semi - Arid Ecosystems Textual Documents B. H. Walker - Amsterdam: Elsevier Science Publishing Co., 1979. - 398.
0444417591
Arid Regions Economics of land & energy Land Use
333