000 00322nam a2200133Ia 4500
008 160316s1972 xxu||||| |||| 00| 0 eng d
020 _a
100 _aRobert J. Weaver
245 _aPlant Growth Substence In Agriculture
250 _a1st
260 _aSANFRANSISCO
_bFREEMAN & CO.
_c1972
300 _a594
700 _a
_a
999 _c14819
_d14819