The New Encyclopaedia Britannica : macropaedia / - 15th ed. - Chicago : Encyclopaedia Britannica, c1979. - 19 v. : ill. (some col.) ; 29 cm. Includes bibliographies. ISBN: 0852293399 Subjects--Topical Terms: Encyclopedias and dictionaries. Dewey Class. No.: Ref 030 En2 1979 v.1