TY  - BOOK
AU  - Raymond,Percy E.
TI  - A contribution to the description of the fauna of the Trenton group
T2  - Museum bulletin ; no. 31
AV  - QH1 .C13 no. 31
PY  - 1921///
CY  - Ottawa
PB  - Thomas Mulvey, printer
KW  - Paleontology
KW  - Ordovician
KW  - Canada
N1  - Cover title; At head of title: Canada.  Department of Mines; Descriptive letterpress on verso of opposite plate; "February 17, 1921."; Includes bibliographical references and index
ER  -