Spencer, Donald D. <br/><br/>
Data processing  an introduction 
Donald Spencer 
 - Columbus, Ohio  Charles E. Merrill  1978 
 - 434 p. : ill. ; 25 cm. 
<br/><br/><label>ISBN: </label>0675084164 
<br/><br/><label>LCCN: </label>78-52303 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing