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Environmental Factors Influencing Incubation Constancy and Recess Frequency in Gadwall (Anas Strepera) in the Prairie Pothole Region of North Dakota

Nicole F. Lorenz

出版	Louisiana State University, 2005
URL	http://books.google.com.hk/books?id=cvDZjwEACAAJ&hl=&source=gbs_api