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| 01835cam 2200361za 4500 |
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| 001 | 9.849969 |
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| 003 | CaOODSP |
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| 005 | 20221107154039 |
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| 007 | cr ||||||||||| |
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| 008 | 180112s1985 oncb||||o f000 0 eng d |
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| 040 | |aCaOODSP|beng |
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| 043 | |an-cnp-- |
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| 086 | 1 |aCW69-9/149E-PDF |
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| 100 | 1 |aBoyd, H. |
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| 245 | 14|aThe large-scale impact of agriculture on ducks in the Prairie Provinces, 1956-81 |h[electronic resource] / |cby H. Boyd. |
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| 260 | |a[Ottawa] : |bCanadian Wildlife Service, |c1985. |
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| 300 | |a13 p. : |bmaps |
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| 490 | 1 |aProgress notes ; |vno. 149 |
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| 500 | |a"January 1985." |
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| 500 | |aDigitized edition from print [produced by Environment and Climate Change Canada]. |
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| 500 | |aIssued also in French under title: Les grandes répercussions de l'agriculture sur les canards dans les Prairies, 1956 à 1981. |
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| 504 | |aIncludes bibliographical references. |
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| 520 | 3 |a"Changes in duck numbers and production in the Prairie Provinces are compared with quinquennial agricultural census statistics and annual estimates of crop areas and production, to examine why the severe local damage known to be caused by wetland drainage and destruction of nesting cover affected regional duck populations relatively little until very recent years"--Abstract. |
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| 692 | 07|2gccst|aBirds |
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| 692 | 07|2gccst|aHabitats |
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| 692 | 07|2gccst|aAgriculture |
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| 693 | 4|aDucks |
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| 710 | 1 |aCanada. |bEnvironment Canada. |
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| 710 | 2 |aCanadian Wildlife Service. |
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| 775 | 08|tLes grandes répercussions de l’agriculture sur les canards dans les Prairies, 1956 à 1981 |w(CaOODSP)9.860631 |
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| 830 | #0|aProgress notes (Canadian Wildlife Service)|vno. 149|w(CaOODSP)9.504439 |
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| 856 | 40|qPDF|s545 KB|uhttps://publications.gc.ca/collections/collection_2018/eccc/CW69-9-149-eng.pdf |
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