Subject ASC0003tql
The geological magazine, or, Monthly journal of geology.
n.s. decade 4, v. 2 (1895), Page 251 (1895)
Smithsonian Libraries
BHL Page 30555161
Keywords
rhomboid structure geometry stack shell-structure shell shell structure ammonite prism calcium carbonate natili nautilus crystalline conchiolin rhombohedra gastropod cephalopod woodcut