Jain, V.K, <br/><br/>
Computer Science for school  Textual Documents 
V.K. Jain 
 - ist ed. 
 - Delhi  CBS Publishers & Distributors  1988 
 - pg145:  23cm. 
<br/><br/><label>Subjects--Index Terms: </label>Computer Programming G- Computer science 
<br/><br/><label>Dewey Class. No.: </label>001.642