I.—On the Chert and Siliceous Schists of the Permo-Carboniferous Strata of Spitzbergen, and on the Characters of the Sponges therefrom, which have been described by Dr. E. von Dunikowski

Main Author: Hinde, George Jennings
Format: Article
Terbitan: , 1888
Online Access: https://zenodo.org/record/1635852