000 00345 a2200109 4500
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100 _aHyman, L. H.
245 _aThe invertebrates :
_bplatyhel minthes and rhynchocoela the acoelomate bilateria
_cL. H. Hyman
260 _aNew York
_bMc. Grow Hill Book Co. Inc.
_c1951
300 _a154p.
942 _2ddc
_cBK
999 _c8936
_d8936