=LDR 00000nam a2200000ui 4500 =001 5659 =008 250530s1979\\\\xx\|||||||||||||||||eng\d =082 04$a577.4 UNE =110 2\$aUNESCO =245 10$aTropical grazing land ecosystems: a state-of-knowledge report prepared by Unesco/UNEP/FAO =260 \\$aParis :$bUNESCO,$c1979 =852 \\$bFreeman Library$cBooks$h577.4 UNE