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The Birds of the Ligonier Valley
Robert C. Leberman
出版Carnegie Museum of Natural History, 1976
主題Nature / Birdwatching GuidesTravel / United States / Northeast / Middle Atlantic (NJ, NY, PA)
ISBN09112390739780911239072
URLhttp://books.google.com.hk/books?id=a9cgAQAAIAAJ&hl=&source=gbs_api