Dos, word perfect and lotus :  office companion / 
Robert W. Harris. 
 - Kalookan City :  Philippine Graphic Arts, Inc,  1990. 
 - 367p 
<br/><br/> Includes bibliographical reference and index. 
<br/><br/><label>ISBN: </label>0940087448 
<br/><br/><label>Subjects--Topical Terms: </label><br/>WORD PERFECT ( COMPUTER PROGRAM ).<br/>LOTUS 123 ( COMPUTER PROGRAM ).<br/>PC DOS  ( COMPUTER OPERATING SYSTEM ).<br/>BUSINESS--DATA PROCESSING.
<br/><br/><label>LC Class. No.: </label>HF 5548.4 W63  / H37