O'Brien, James Durham, John W <br/><br/>
PC Software Workbook  Tutorial Introduction to;The PC and DOS,PC-Write,PC-Calc+ 

 - 2nd ed. 
 - New Delhi  All India Traveller Bookseller  1996 
 - xii, 239 p.  28 cm.  PB 
<br/><br/><label>Subjects--Uniform Titles: </label><br/>Computer Science<br/>PC Software Workbook
<br/><br/><label>Dewey Class. No.: </label>005.3  / OBR