000 01862cam  2200373za 4500
0019.850304
003CaOODSP
00520221107154128
007cr |||||||||||
008180118s1990    onca||||o    f000 0 eng d
040 |aCaOODSP|beng
043 |an-cn-on
0861 |aCW69-9/189E-PDF
1001 |aRoss, Richard Kenyon.
24510|aDistribution of American black duck and mallard in northern Ontario |h[electronic resource] / |cR.K. Ross and D. Fillman.
260 |a[Ottawa] : |bCanadian Wildlife Service, |c1990.
300 |a5 p. : |bfigs.
4901 |aProgress notes ; |vno. 189
500 |aIssued also in French under title: Répartition géographique du canard noir et du canard colvert dans le nord de l'Ontario.
500 |a"April 1990."
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
504 |aIncludes bibliographical references.
520 |a"The province of Ontario contains the major zone of range overlap for the Mallard Anas platyrhynchos and the closely related American Black Duck A. rubripes. Both of these very important game species have, in recent years, undergone declines in numbers that are of considerable concern (Canadian Wildlife Service/U .S. Fish and Wildlife Service 1986)"--Introd.
69207|2gccst|aAquatic birds
69207|2gccst|aPopulation distribution
693 4|aDucks
693 4|aMallards
7001 |aFillman, D.
7101 |aCanada. |bEnvironment Canada.
7102 |aCanadian Wildlife Service.
77508|tRépartition géographique du canard noir et du canard colvert dans le nord de l'Ontario |w(CaOODSP)9.860801
830#0|aProgress notes (Canadian Wildlife Service)|vno. 189|w(CaOODSP)9.504439
85640|qPDF|s408 KB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-9-189-eng.pdf