Birds in peril
Subtitle: a guide to the endangered birds of Canada and the United States
By: by John P. S. Mackenzie ; illustrated by Terrence Shortt.
Contributors: Shortt, T. M.
Publisher: McGraw-Hill Ryerson
Published: 1977
Place of publication: Toronto
Language: eng
Number of pages: 191
Subjects: Rare birds -- United States; Rare birds -- Canada; Birds -- Conservation, Canada; Birds -- Conservation, United States; Birds -- Canada; Birds -- United States
Notes: Bibliography: p. 189-191.