Lotus 123 release 2.3 : a software tool for engineers - Etter, D.M. 4 0 16; 5 (Reading, MA :;Reading, MA : Addison-Wesley,;Addison-Wesley, Benjamin/Cummings, 1992)
Keywords: 2 -- 0; 6; Lotus 1-2-3 (Computer file).; 20; 2