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An Atlas of Pollen of the Trees and Shrubs of Eastern Canada and the Adjacent United States: Clethraceae to Caprifoliaceae

Reginald Johnstone AdamsJohn Kenneth Morton

出版	Department of Biology, University of Waterloo, 1979
URL	http://books.google.com.hk/books?id=z4PwAAAAMAAJ&hl=&source=gbs_api