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A Directory of Information Resources in the United States: Physical Sciences, Engineering
National Referral Center (U.S.)
出版Library of Congress, 1971
主題Science / GeneralTechnology & Engineering / Reference
ISBN08444000179780844400013
URLhttp://books.google.com.hk/books?id=vQ9gAAAAMAAJ&hl=&source=gbs_api
EBookFULL_PUBLIC_DOMAIN