Hafner, Arthur W. <br/><br/>
Descriptive statistical techniques for librarians / 
Arthur W. Hafner 
 - Chicago, Ill. :  American Library Association,  1989 
 - 261 p. :  ill. ;  23 cm. 
<br/><br/><label>ISBN: </label>0838905102  RM49.77 
<br/><br/><label>LCCN: </label>89-144 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Library science--Statistical methods<br/>Library statistics