Approximately 7400 entries to world literature. Increasing number of references shows expansion of literature through appearance of new journals and greater accessibility of journals. Alphabetical arrangement by primary authors. Each entry gives bibliographical information. Most volumes cover specific time periods, i.e., pt. 1, v. 1, 1940-1951; v. 2, 1952-1959; v. 3, 1960-1965; v. 4, 1966-1969; v. 5, subject listings for 1940-1969; pt. 2, v. 1, 1970-1975; v. 2, subject headings for 1970-1975. Includes subject index outline and lists of primary and secondary publications.