00000nam 2200000za 4500 9.850252 CaOODSP 20241203113641 cr ||||||||||| 180117s1989 oncb||||o f000 0 eng d CaOODSP eng n-cn-on CW69-9/180E-PDF Surveys of breeding waterfowl in southern Ontario, 1971-87 [electronic resource] / D.G. Dennis ... [et al.]. [Ottawa] : Canadian Wildlife Service, 1989. 4 p. : map Progress notes ; no. 180 "March 1989." Digitized edition from print [produced by Environment and Climate Change Canada]. Issued also in French under title: Relevés des effectifs d'oiseaux aquatiques nichant dans le sud de l'Ontario, 1971-1987. Includes bibliographical references. "The Canadian Wildlife Service (CWS) began surveys of breeding waterfowl in southern Ontario in 1951"--Introd. gccst Aquatic birds gccst Surveys Waterfowl Dennis, D. G. Canada. Environment Canada. Canadian Wildlife Service. Relevés des effectifs d’oiseaux aquatiques nichant dans le sud de l’Ontario, 1971-1987 (CaOODSP)9.860873 Progress notes (Canadian Wildlife Service) no. 180 (CaOODSP)9.504439 PDF 276 KB https://publications.gc.ca/collections/collection_2018/eccc/CW69-9-180-eng.pdf