The new encyclopaedia britannica macropaedia knowledge in depth: vol. 11 / [Book] : University of chicago. - 15th ed. - Chicago : William Benton, 1979. - 1119p. ; 29 cm. - 11 . All. ISBN: 0852293399 Subjects--Topical Terms: Encyclopedias and dictionaries. Dewey Class. No.: 030