The Mesozoic and Cenozoic Echinodermata of the United States, by William Bullock Clark and Mayville W. Twitchell
Monographs of the United States Geological Survey. Volume LIV. The Mesozoic and Cenozoic Echinodermata of the United States. By William Bullock Clark and Mayville W. Twitchell
The Mesozoic and Cenozoic Echinodermata of the United States
Goniometry
Maryland
Bibliography of the Mesocoic and Cenozoic Echinodermata of the United States
The Mineral Industry of New Jersey for 1912. [With a Map.].
Annual Administrative Report of the State Geologist for the Year 1912 Including a Second Report on Shark River Inlet
The Cenozoic Cassiduloidea of the United States ...
The Mesozoic and Cenozoic Echinodermata of the United States
The Mesozoic and Cenozoic Echinodermata of the United States
The Mineral Industry of New Jersey for 1913
The Mesozoic and Cenozoic Echindermata of the United States
The Mesozoic and Cenozoic Echinodermata of the United States, by William Bullock Clark and Mayville W. Twitchell