Mesozoic and Cenozoic Echinodermata of the United States.
Contributors: Twitchell, Mayville William, 1868-
Series: United States. Geological survey. Monographs -- v.54.; Monographs of the United States Geological Survey -- v.54.
Publisher: Govt. print. off.
Published: 1915
Place of publication: Washington
Language: eng
Number of pages: 341
Subjects: Echinodermata, Fossil
Notes: Bibliography: p. 14-20.