The American Geologist, Vol. 16 (Classic Reprint) Newton Horace Winchell

Excerpt from The American Geologist, Vol. 16

The discovery and description of this genus by Prof. J. M. Clarke has materially added to our knowledge of the structure and development of the siphon in the Endoceratid? and thrown a new light upon the Это и многое другое вы найдете в книге The American Geologist, Vol. 16 (Classic Reprint) (Newton Horace Winchell)