A contribution to the description of the fauna of the Trenton group /
by P.E. Raymond.
- Ottawa : Thomas Mulvey, printer, 1921.
- 64 p. : ill. ; 25 cm.
- Museum bulletin ; no. 31. Geological series ; no. 38 .
- Museum bulletin (Victoria Memorial Museum (Canada)) ; no. 31. Museum bulletin (Victoria Memorial Museum (Canada)). Geological series ; no. 38. .
Cover title. At head of title: Canada. Department of Mines. Descriptive letterpress on verso of opposite plate. "February 17, 1921."