Siemens, Nicolai <br/><br/>
Operations research :  planning, operating, and information systems  / 
Nicolai Siemens, C. H. Marting [and] Frank Greenwood 
 - New York :  Free Press,  1973. 
 - x, 450 p.  ;  24 cm. 
<br/><br/>Planning systems. -- Operating systems. -- Management information systems. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Sistemas de informação gerencial<br/>Administração<br/>Pesquisa operacional
<br/><br/><label>Dewey Class. No.: </label>658.4034