Davis, William S.,  1943- <br/><br/>
Information processing systems :  an introduction to modern, computer-based information systems / 
by William S. Davis. 
 - Reading, Mass. :  Addison-Wesley,  1978. 
 - 458 p. :  ill., (some col), map ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/><label>ISBN: </label>0201009994 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electronic data processing.