Barker, Donald. <br/><br/>
Developing business experts systems with levels / 
Donald Barker. 
 - Columbus :  Merril Pub.,  1988. 
 - 82 p.:  ill;  30 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Business.
<br/><br/><label>Dewey Class. No.: </label>001.642  / BAD 1988