Classification.
Class B. part 1, B-BJ: Philosophy.

APA Citation

Library of Congress. Subject Cataloging Division., Library of Congress. Classification Division. (19501968). Classification: Class B. part 1, B-BJ: Philosophy. 2d ed. (with supplementary pages) Washington: [For sale by the Card Division, Library of Congress].

MLA Citation

Library of Congress. Subject Cataloging Division, and Library of Congress. Classification Division. Classification: Class B. Part 1, B-BJ: Philosophy. 2d ed. (with supplementary pages) Washington: [For sale by the Card Division, Library of Congress], 19501968.