TY - BOOK AU - Pettee,Julia TI - Subject headings: the history and theory of the alphabetical subject approach to books U1 - 651.53 20 PY - 1946/// CY - New York PB - The H. W. Wilson Company KW - Subject headings N1 - "Published library catalogs mentioned in chapter II": p. 50-53. Bibliography: p. [167]-186 ER -