000 00318nam a2200133Ia 4500
008 160316s1990 xxu||||| |||| 00| 0 eng d
020 _a
100 _aDonald M Elkins
245 _aCrop Science Laboratory Studies
250 _a1
260 _aAMES
_bIOWA STSTE UNIVERSITY PRESS
_c1990
300 _a175
700 _a
_a
999 _c24684
_d24684