Includes index.
Imprint varies: Nicholas Publishing Co, 1977; New York : Sterling Publishing Co. ; London : Oak Tree Press Co., 1979; New York : Concord Reference Books, Inc., <1982->; Kirkland, Wash. : General Information, Inc., <1987->; Detroit, Mich. : Omnigraphics, Inc., <1992->
Issued also on CD-ROM.