000 00302 am a2200121 a 4500
100 1 _aFluke, C.L.
245 1 _aFight oyster shell scale
260 _aWisconsin
_c1920
300 _a1-3 p.
942 _2udc
_cB
440 _aWisconsin Agricultural Extension Service. Circular No. 124
901 _aS50717
999 _c107976
_d107976