The new encyclopaedia Britannica. - 15th ed. - Chicago : Encyclopaedia Britannica, Inc./Board of Directors Robert P.Gwinn ; President Peter B.Norton ; general editor Robert McHenry, 1992. - 32 v. : ill. (some col. ) ; 29 cm. Includes index. v. 1. Guide to the Britannica -- v. 2. Indexes. ISBN: 0852295537 Subjects--Topical Terms: Encyclopedias and dictionaries. LC Class. No.: AE5 / .N49 1992