Dewdney, A. K. The planiverse : computer contact with a two-dimensional world / A.K. Dewdney. - Toronto, Canada : McClelland and Stewart Ltd, c1984. - 267 p. : ill. ; 24 cm. ISBN: 0671463632 (pbk.) : $9.95 0771027427 LCCN: 83024799 Subjects--Topical Terms: Hyperspace. LC Class. No.: QA699 / .D51 1984 Dewey Class. No.: 530.8