Walker, B.H. ed
Management of semi arid ecosystems - Amsterdam Elsevier Scientific 1979 - 396 p.
0444417591
Land use case studies, Arid regions case studies
577.4.008 N79
Management of semi arid ecosystems - Amsterdam Elsevier Scientific 1979 - 396 p.
0444417591
Land use case studies, Arid regions case studies
577.4.008 N79