Title: Biblio RTF Export
Author: Biblio 7.x

J. E. V.  Boas, Contributions to Pteropodernes, 1st ed., vol. 4. Spolia Atlantica-Vidensk, 1886, pp. 1-231.

S.  Van Der Spoel, Euthecosomata, a group with remarkable developmental stages (Gastropoda, Pteropoda). J. Noorduyn & ZN, Gorinchem, 1967, p. 375.