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Library of Congress classification. Q. Science

판 4개, 최신 판부터

Library of Congress, Cataloging Distribution Service, 2009, ISBN 9780844412290

Library of Congress, Cataloging Distribution Service, 2007, ISBN 9780844411682

Library of Congress, Cataloging Distribution Service, 2004, ISBN 9780844410869

Library of Congress, Cataloging Distribution Service, 1996, ISBN 9780844409283