Katz, William A. <br/><br/>
Introduction To Reference Work: Reference Services 
/by William A. Katz 
 - London:  McGraw-Hill Book Company;  1969. 
 - 254p. 
<br/><br/><label>ISBN: </label>000 
<br/><br/><label>Dewey Class. No.: </label>025.52  / KAT/I