A practical guide to Library of Congress classification 由 Snow, Karen 1977-

Library of Congress classification. Q. Science

Library of Congress classification. T. Technology

Library of Congress classification. S. Agriculture

Library of Congress classification. KL-KWX. Law of Asia and Eurasia, Africa, Pacific Area, and Antarctica

Library of Congress classification. R. Medicine

Library of Congress classification. DS-DX. History of Asia, Africa, Australia, New Zealand, etc.

Library of Congress classification. H. Social sciences

Library of Congress classification. J. Political science

Table of contents only

Library of Congress classification. L. Education