00339nam a2200085Ia 4500008004100000100002700041245012100068260004200189650002200231190829s9999||||xx |||||||||||||| ||und||  aLibbie Henrietta Hyman 4aThe Invertebrates Vol.6- Mollusca 1, Aplacophora, Polyplacophora, Monoplacophora, Gastropoda, The Coelmate Bilateria  bThe Macmillan CompanyaNew Yorkc1918  aEconomic  Zoology