James L. Harner, Literary Research Guide — Literature-Related Topics and Sources (2017)
“ Entries are now organized in three parts: (1) a subject index, with headings for persons, historical periods, major fields of philosophy and their branches, and topics; (2) an author index, with descriptive abstracts of several works (beginning with the volume for 1969) ; (3) a book review index (since the volume for 1970; coverage of book reviews in the database begins with vol. 28 [1994] ) . The organization, subject indexing, and design have improved markedly over the years ”
