000 00483nam a2200169Ia 4500
005 20241120164919.0
008 241119s9999||||xx |||||||||||||| ||und||
041 _aENG
082 _a338.19
_bJOH
100 _aD. Gale Johnson
245 0 _aGrain yields and the American food supply : Analysis of yield changes and Possibilities
260 _aChicago
_bUniversity Of Chicago Press
_c1963
300 _a146p
546 _aENGLISH
700 _a Robert L. Gustafson,
942 _cBK
999 _c16576
_d16576