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The co-operative Breeding Bird Survey in Canada, 1971 / by Anthony J. Erskine = Étude collective des populations d'oiseaux nicheurs du Canada en 1971 / par Anthony J. Erskine.: CW69-9/26-PDF

"In 1971 we continued thls cooperative attempt to detect and measure year-to-year changes in numbers of birds (chiefly songbirds)"--Introd.

Permanent link to this Catalogue record:
publications.gc.ca/pub?id=9.848990&sl=0

Publication information
Department/Agency
  • Canada. Environment Canada.
  • Canadian Wildlife Service.
TitleThe co-operative Breeding Bird Survey in Canada, 1971 / by Anthony J. Erskine = Étude collective des populations d'oiseaux nicheurs du Canada en 1971 / par Anthony J. Erskine.
Variant title
  • Étude collective des populations d'oiseaux nicheurs du Canada en 1971
Series title
  • Progress notes ; no. 26 = Cahiers de biologie ; n° 26
Publication typeMonograph - View Master Record
LanguageBilingual-[English | French]
FormatDigital text
Electronic document
Parallel description[French]
Note(s)
  • "May 1972."
  • Digitized edition from print [produced by Environment and Climate Change Canada].
  • Text in English and French.
Publishing information
  • Ottawa : Canadian Wildlife Service = Service canadien de la faune, 1972.
Author / Contributor
  • Erskine, Anthony J., 1931-
Description29, [2] p.
Catalogue number
  • CW69-9/26-PDF
Subject terms
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