000 00339nam a2200145Ia 4500
008 130223s9999 xx 000 0 und d
100 _aRobson, T.O.
245 _aControl of aquatic weeds
260 _aLondon
260 _c1968
300 _a54 p.
440 _aNo. 194; Great Britain Ministr
901 _pS16236
942 _cB
_2udc
999 _c118767
_d118767