Lotus 1-2-3 release 3.1 : Tutorial / Lotus Development Corporation - Cambridge : Lotus development corporation, c1990. - vii,150 p. : ill. ; 23 cm. ISBN: LCCN: Subjects--Topical Terms: SpreadsheetLotus 123Computer science LC Class. No.: HF5548.4 / .L67 1990 Dewey Class. No.: 005.3 / L918