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100 _a Hyman, L.H
245 _aThe invertebrates vol-6, Mollusca 1: Aplacophora, polyplacophora, Monopplacophora, Gastropoda, the coelomate Bilateria /
_c Hyman, L.H
260 _aNew york
_bMcGraw-Hill book,Co,
_c1967
300 _a394p.
942 _2ddc
_cBK
999 _c7581
_d7581