The ring-billed gull in Ontario
Subtitle: a review of a new problem species
By: H. Blokpoel, G.D. Tessier.
Contributors: Tessier, G. D.
Series: Occasional paper / Canadian Wildlife Service -- no. 57.; Occasional paper (Canadian Wildlife Service) -- no. 57.
Publisher: Canadian Wildlife Service
Published: 1986
Place of publication: [Hull, Quebec]
Language: eng
Number of pages: 34
Subjects: Ring-billed gull.; Gulls.; Birds -- Ontario.
Notes: Issued also in French under title: Le goéland à bec cerclé en Ontario.

Bibliography: p. 30-32.