01011nam a2200277 i 450099100354991970753620021217152054.0971030s1976 ne a b 001 0 eng d9031301760b11829205-39ule_instLE00302878ExLDip.to BiologiaengSpoel, S. van der531291Pseudothecosomata, Gymnosomata and Heteropoda (Gastropoda) /by S. van der SpoelUtrecht :Scheltema & Holkema,1976484 p. :ill., maps ;25 cmGymnosomataHeteropodaMollusksClassificationThecosomata.b1182920507-07-1118-12-02991003549919707536LE003 594 SPO01.02 (1976)12003000090840le003-E0.00-l- 00000.i1207966218-12-02Pseudothecosomata, Gymnosomata and Heteropoda (Gastropoda898382UNISALENTOle00301-01-97ma -engne 01