00274nam a2200121Ia 4500020001500000082002100015100001800036245003800054260003400092300001600126500000500142700000500147  a0631134816  a338.904bG857.WF  aGrigg, David.  aThe World food problem, 1950-80b  aOxfordbBasil Blackwellc1985  a276p. Index  a  a