Katz, William A.,   1924-  <br/><br/>
Introduction to reference work 

 - vii, 376 pages ;   23 cm 
 - McGraw-Hill series in library education .
 - McGraw-Hill series in library education .
<br/><br/> Includes bibliographies 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Reference services (Libraries) ; Reference books - Bibliography
<br/><br/><label>Dewey Class. No.: </label>021