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Investigating the World of Science. [By] Ellsworth S. Obourn, Elwood Heiss, Gaylord C. Montgomery, Richard H. Lape

Ellsworth Scott OBOURN

出版	Van Nostrand, 1966
URL	http://books.google.com.hk/books?id=xLY2wAEACAAJ&hl=&source=gbs_api