00550cam a2200193 7i4500 0000040282 20220826090000.0 9781566860901 1566860903 (pbk) 384.33 RIT QA76.55 RIT 1993 Rittner, Don author The whole on-line Almanac : info from A to Z Don Rittner. New York, NY: Brady, 1993. xiv, 544 pages; 30 cm. text rdacontent unmediated rdamedia volume rdacarrier Videotex systems