The New Encyclopaedia Britannica.
Supplement has title: Encyclopaedia Britannica supplement
- 15th ed.
- Chicago : Encyclopaedia Britannica, c1980.
- 30 v. : ill. (some col.) ; 29 cm.
Spine title: Encyclopaedia Britannica. Accompanied by supplement (2 v.) issued in 1994 uder the title: The Encyclopaedia Britannica supplement.
Includes bibliographies.
Propaedia: outline of knowledge and guide to the Britannica. 1 v.--Micropaedia: ready reference and index. 10 v.--Macropaedia: knowledge in depth. 19 v.