The new encyclopaedia britannica macropaedia knowledge in depth / [Book] :
University of chicago.
- 15th ed.
- Chicago : William Benton, 1979.
- 1132p. : ill. (some col.) ; 29 cm.
- 1 .
Includes: Propaedia (Outline of knowledge and guide to the Britannica), Micropaedia (Ready reference and index), Macropaedia (Knowledge in depth), and two volume index. Includes index.