Haapanen, A., & Paasivirta, O. (1973). The Waterfowl in eutrophic waters in South West Finland.
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Dyfyniad Arddull Chicago
Haapanen, Antti, and Olli Paasivirta. The Waterfowl in Eutrophic Waters in South West Finland. 1973.
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Dyfyniad MLA
Haapanen, Antti, and Olli Paasivirta. The Waterfowl in Eutrophic Waters in South West Finland. 1973.
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Rhybudd: Mae'n bosib nad yw'r dyfyniadau hyn bob amser yn 100% cywir.