000 00315nam a2200121Ia 4500
008 220204s9999 xx 000 0 und d
082 _a632.51:631.348.4
_bAHL
100 _aAHLGREN, Gilbert H
245 0 _aPrinciples of weed control
260 _aNew York
_bJohn Wiley
_c1951
650 _aWeed control
942 _cBK
999 _c19405
_d19405