00000nam 2200000za 4500 9.848869 CaOODSP 20241203113641 cr ||||||||||| 171214s1970 oncb||||o f000 0 eng d CaOODSP eng eng fre n-cn--- CW69-9/15-PDF Erskine, Anthony J., 1931- The co-operative Breeding Bird Survey in Canada, 1966-1969 [electronic resource] / by Anthony J. Erskine = Étude collective des populations d'oiseaux nicheurs du Canada, 1966-1969 / par Anthony J. Erskine. Étude collective des populations d'oiseaux nicheurs du Canada, 1966-1969 [Ottawa] : Canadian Wildlife Service = Service canadien de la faune, 1970. 19 p. : maps Progress notes ; no. 15 = Cahiers de biologie ; n° 15 "April 1970." Digitized edition from print [produced by Environment and Climate Change Canada]. Includes bibliographical references. Text in English and French. gccst Wildlife gccst Research Canada. Environment Canada. Canadian Wildlife Service. The co-operative Breeding Bird Survey in Canada, 1966-1969 fre (CaOODSP)9.848871 Progress notes (Canadian Wildlife Service) no. 15 (CaOODSP)9.504439 PDF 1.42 MB https://publications.gc.ca/collections/collection_2017/eccc/CW69-9-15.pdf