000 01727nam  2200349za 4500
0019.850296
003CaOODSP
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008180118s1989    oncd||||o    f000 0 eng d
040 |aCaOODSP|beng
043 |an-cn---
0861 |aCW69-9/186E-PDF
1001 |aDickson, Kathryn Marie.
24510|aTrends in sizes of breeding duck populations in western Canada, 1955-89 |h[electronic resource] / |cK.M. Dickson.
260 |a[Ottawa] : |bCanadian Wildlife Service, |c1989.
300 |a9 p. : |bcharts.
4901 |aProgress notes ; |vno. 186
500 |aIssued also in French under title: Tendances des effectifs de canards nichant dans l'ouest du Canada, 1955-1989.
500 |a"December 1989."
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
520 |a"Changes in the sizes of duck populations have been monitored annually since 1955 over nearly 3.6 million square kilometres of breeding habitat in Montana and North and South Dakota in the United States, the western Canadian Prairie provinces, the Mackenzie Valley of the Northwest Territories, and parts of Alaska"--Introd.
69207|2gccst|aBirds
69207|2gccst|aPopulation
693 4|aDucks
7101 |aCanada. |bEnvironment Canada.
7102 |aCanadian Wildlife Service.
77508|tTendances des effectifs de canards nichant dans l'ouest du Canada, 1955-1989 |w(CaOODSP)9.860762
830#0|aProgress notes (Canadian Wildlife Service)|vno. 186|w(CaOODSP)9.504439
85640|qPDF|s338 KB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-9-186-eng.pdf