Haiduk, H. Paul Lotus 1-2-3. Release 2.2 / H. Paul Haiduk and Paul W. Ross - Lake Forest, Ill. : Glencoe, c1991. - 1 v. (various p. : ill. ; 27 cm. Includes index. ISBN: LCCN: Subjects--Topical Terms: Computer program language LC Class. No.: QA76.73 / .H35 1991 Dewey Class. No.: 005.7565 / H149l