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Google圖書搜尋
Great Lakes Ice Cover, Winter 1966-67
Donald R. Rondy
出版
Department of the Army, Lake Survey District, Corps of Engineers
, 1967
URL
http://books.google.com.hk/books?id=N_dnLLkJO5YC&hl=&source=gbs_api
EBook
FULL_PUBLIC_DOMAIN