A Simplified Guide to Lotus 123/  English. 
I.M. Premachandra, M. Eng, Ph. D. 
 - Sri Lanka:  Postgraduate Institute Of Management University Of Sri Jayawardenepura ,  1998. 
 - ix, 191p.:  ill.;  28cm. 
<br/><br/><label>Dewey Class. No.: </label>681.14  / POS