003600000a22001090004500060000800000082002200008245014000030260005400170260000900224300000800233310000900241  a115  a574.526 52 ICAR 2  aDesertification and its control : released on the occasion of the UN congerence on desertification, Nairobi 29 August 9  September 1977  aNew Delhi, Indian council of agricultural resarch  c1977  a375  aICAR