The cretaceous reptile champsosaurus natator Parks
By: by Loris S. Parks.
Contributors: Canada. Department of Northern Affairs and National Resources.; National Museum of Canada.
Series: Bulletin -- no.145
Publisher: Minister of Northern Affairs andNatural Resources
Published: 1956
Place of publication: Ottawa
Language: eng
Number of pages: 51
Notes: At head of title: National Museum of Canada.

At head of title:Canada, Department of Northern Afairs and National Resources, National Parks Branch.