-Li's clear and concise text comprises the equivalent of an in-service on the art and technicalities of online searching. Part one describes the kind of reference sources to be found courtesy of the telephone utilities. Coverage includes free text and thesaurus searching, the kinds of databases available, and techniques for managing online search operations. Part two details vendor-specific techniques for Dialog, ORBIT, and BRS. The `common utilities' such as Compuserve, the Source, and Dow Jones are also briefly discussed. Explanations of microcomputer searching, downloading, and system-specific qualities for the chart mind conclude the text. This thorough volume greatly clarifies the confusion within one of the latest phases of library service. For all professional collections. —Reference Books Bulletin