G.K. Colbath books & textbook
Plectonotus and Plectonotoides, New Subgenus of Plectonotus (Bellerophontacea: Gastropoda) and Their Biogeographic Significance
A.J. Boucot D.M. Rohr Jane Gray Alvaro de Faria G.K. Colbath
E. Schwizerbart'sche Verlagsbuchhandlung /1986T Pamphlet / 14 Pages
