Holtzman, Steven R. Digital mantras : the languages of abstract and virtual worlds / Steven R. Holtzman. - Cambridge, Mass. : MIT Press, c1994. - x, 321 p. : ill. (some col.) ; 26 cm. Includes bibliographical references p. ([311]-315) and index. ISBN: 9780262581431 $29.95 LCCN: 94009631 Subjects--Topical Terms: Computers.Virtual reality. LC Class. No.: QA76 / .H6234 1994 Dewey Class. No.: 001.3/0285