000 00302 am a2200121 a 4500
100 1 _aSorenson, D.D.
245 1 _aScience report
260 _aMadison
_c1969
300 _a1-68 p.
942 _2udc
_cB
440 _aScience Wisconsin Agriculture Experiment Station. Bulletin No. 594
901 _aS22029
999 _c108296
_d108296