El-Hi Textbooks and Serials In Print (1956 - Current)
New York: Bowker Ref Z5813 .A51 (Latest ed.) An annual index to textbooks, reference books for use in elementary and high schools, periodicals, maps, pedagogical books, test, teaching aids, and other classroom related materials published in the United States and currently available for purchase. Entries arranged by subject. Also includes author, title, series, serial, and publisher indexes.