000 00309nam a2200121Ia 4500
008 140317s9999 xx 000 0 und d
082 _a632
100 _aWeaver,Robert J.
245 _aPlant growth substances in agriculture.
260 _aSan fransisco
_bW.H.Freeman.
_c1972
300 _a594
942 _2ddc
_cBK
999 _c6037
_d6037