The bookman's bible : a coded guide to the pricing of antiquarian books /

v.1. Books in English, 1850-1899 -- v.2. Books in English, 1900-1924 -- v.3. Books in English 1925-1949

College textbooks; a classified listing of 16,000 textbooks used in 60 colleges, coded to show most frequently used texts and texts used in general courses, and in several departments of instruction.

Mode of access: Internet.

American national standard for information sciences : extended latin alphabet coded character set for bibliographic use /

"ANSI Z39.47-1985."

Bulletin /

Some bulletins are coded individually as series.