Management of semi-arid ecosystems
Management of semi-arid ecosystems edited by B.H. Walker - Amsterdam Elsevier Scientific Publishing Co. 1979 - 398 p. - No. 7 Development in agricultural and managed-forest ecol .
0444417591 (v.7); 0444415157 (Series)
Semi-Arid Ecosystems
577.5.008.2(252) / W177M