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USGS · 5211121

Effects of harvest restrictions on black duck harvest and populations trends

J.R. Serie·R.E. Trost·J.R. Sauer
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J.R. Serie, R.E. Trost, J.R. Sauer. 1997. Effects of harvest restrictions on black duck harvest and populations trends. https://pubs.usgs.gov/publication/5211121

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