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100 _aHyman, L. H.
245 _aThe invertebrates :
_bprotogoa through ctenophora /
_cL. H. Hyman
260 _aNew York
_bMc. Grow HillBook Co. Inc.
_c1951
300 _a189p.
942 _2ddc
_cBK
999 _c8937
_d8937