000 00317nam a2200121Ia 4500
008 130223s9999 xx 000 0 und d
100 _aClark, Wilson F.
245 _aControlling weeds and algae in farm ponds
260 _aIthaca
440 _aNo. 910; New York State Colleg
901 _pS26454
942 _cB
_2udc
999 _c118933
_d118933