| American white pelicans breeding in the northern plains: productivity, behavior, movements, and migration 科技报告 来源:US Geological Survey (USGS). 出版年: 2013 作者: Sovada, Marsha A. msovada@usgs.gov; Pietz, Pamela J. ppietz@usgs.gov; Woodward, Robert O. rwoodward@usgs.gov; Bartos, Alisa J. abartos@usgs.gov; Buhl, Deborah A.; Assenmacher, Michael J.
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