Observations of mallards in the parkland of Alberta
By: by Michael F. Sorensen.
Contributors: Canadian Wildlife Service.
Series: Occasional paper (Canadian Wildlife Service) -- no. 36.
Publisher: Canadian Wildlife Service
Published: 1978
Place of publication: [Ottawa]
Language: eng
Number of pages: 22
Subjects: Mallard.; Birds -- Alberta.
Notes: Issued under the authority of the Minister of Fisheries and the Environment.

Summary in French.

Bibliography : p. 20.