000 00310nam a2200121Ia 4500
005 20260224040834.0
008 260224s9999||||xx |||||||||||||| ||und||
082 _a633.15 SPR
100 _aG F Sprague
245 0 _aCorn and corn improvement
260 _aMadiSon: American: Soc. of Agronomy
_c1955
942 _cBK
999 _c1417
_d1417