000 01429nam  2200325za 4500
0019.849172
003CaOODSP
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008171221s1975    onc ||||o    f000 0 eng d
040 |aCaOODSP|beng
043 |an-cn---
0861 |aCW69-9/45E-PDF
1001 |aErskine, Anthony J., |d1931-
24514|aThe co-operative Breeding Bird Survey in Canada, 1974 |h[electronic resource] / |cby Anthony J. Erskine.
260 |a[Ottawa] : |bCanadian Wildlife Service, |c1975.
300 |a19 p.
4901 |aProgress notes ; |vno. 45
500 |a"April 1975."
500 |aDigitized edition from print [produced by Environment and Climate Change Canada].
500 |aIssued also in French under title: Étude collective des populations d'oiseaux nicheurs du Canada, 1974.
520 |a"The Breeding Bird Survey (BBS) is our only coast-to-coast operation monitoring trends in numbers of birds (especially land birds)"--Introd.
69207|2gccst|aBirds
69207|2gccst|aSurveys
7101 |aCanada. |bEnvironment Canada.
7102 |aCanadian Wildlife Service.
77508|tÉtude collective des populations d’oiseaux nicheurs du Canada, 1974 |w(CaOODSP)9.859829
830#0|aProgress notes (Canadian Wildlife Service)|vno. 45|w(CaOODSP)9.504439
85640|qPDF|s829 KB|uhttps://publications.gc.ca/collections/collection_2017/eccc/CW69-9-45-eng.pdf