computer software, interactive computer programs, audio recordings, namely, pre-recorded cassette tapes and compact discs; and audio-visual recordings, namely, videotapes all in the fields of training employees of utilities and others engaged in personal interaction with members of the purchasing public on the subjects of the management, equipment installation, equipment operation and repair, and public relations functions of utilities and of other enterprises engaged in the fields of energy consumption and measurement

educational services, namely, conducting classes, seminars and conferences in the fields of training employees of utilities and others engaged in personal interaction with members of the purchasing public on the subjects of the management, equipment installation, equipment operation and repair, and public relations functions of utilities and of other enterprises engaged in the fields of energy consumption and measurement

consulting services for gas, water, and electric utilities and for other industries related to such utilities