000
00317nam a2200121Ia 4500
008
130223s9999 xx 000 0 und d
100
_a
Clark, Wilson F.
245
_a
Controlling weeds and algae in farm ponds
260
_a
Ithaca
440
_a
No. 910; New York State Colleg
901
_p
S26454
942
_c
B
_2
udc
999
_c
118933
_d
118933