Sumner, William Leslie,   1904-1973. <br/><br/>
Statistics in school/ 
W. L. Sumner. 
 - Oxford:  Basil Blackwell,  1950. 
 - vii, 225 pages:  diagrams;  23 cm. 
<br/><br/>Bibliography: pages 219-221. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Education --Statistics.<br/>Statistics.