Encyclopedia of geographic information sources a detailed listing of publications and agencies of interest to managerial personnel, with a record of sourcebooks, periodicals, guides to doing business, government and trade offices, directories, handbooks, bibliographies, and other sources of information on each location : a companion volume to Encyclopedia of business information sources, third edition - Wasserman, Paul; Sanders, Elizabeth Talbot; Sanders, James, 1951- (Gale Research Co., 1978)