Chan, Lois Mai. Library of Congress subject headings : principles and application / Lois Mai Chan. - 2nd ed. - Littleton, Colo. : Libraries Unlimited, 1986. - xvi, 511 p. : ill. ; 25 cm. - Research studies in library science ; no. 19 . Includes index. Bibliography: p. 485-498. ISBN: 0872875431 : $45.00 LCCN: 85024115 Subjects--Topical Terms: Subject headings, Library of Congress. LC Class. No.: Z674 Z695 / .R4 no. 19 Dewey Class. No.: 025.49