00558nam a2200169Ia 4500008004100000020001800041040001700059082002500076100002000101245005500121260002800176300001500204440007300219650005700292700002000349700001900369190327s9999||||xx |||||||||||||| ||und||  a0-03-022836-0  aNITILcNITIL  221sta382.413bG827E  aGrennes, Thomas 4aThe Economics of world grain tradecThomas Grennes  aNew YorkbPraegerc1978  axii, 129p.  aPraeger special studies in international business, finance and trade  aGrain trade-Mathematical models; Agricultural prices  aJohnson, Paul R  aThursby, Marie