McMillen, Ardee Wayne,  1896- <br/><br/>
Statistical methods for social workers / 
by Wayne McMillen. 
 - Chicago :  University of Chicago Press,  1952. 
 - 564 p. :  illus. ;  24 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Վիճակագրություն<br/>Social service