000 00399nam a2200157Ia 4500
008 170101s1969 xx 000 0 und d
082 _a631.558 I-5P
100 _aEASTIN, Jerry D
245 0 _aPhysiological aspects of crop yield : proceedings
260 _bMadison, U.S.
_c1969
300 _a396p
650 _aAGRICULTURE
653 _aAGRICULTURE
653 _aCROP YIELDS
942 _2ddc
_cB
999 _c67311
_d67311