Boardman, Charles Willis,  1885-1959. <br/><br/>
Professional tests as measures of teaching efficiency in high school / 
by Charles W. Boardman. 
 - New York :  AMS Press,  1972. 
 - 85 p. ;  24 cm. 
 - Contributions to education ; no.327. .
<br/><br/> Published also as thesis (Ph. D.) Columbia University, 1928. 
<br/><br/>Bibliography: p. 9. 
<br/><br/><label>ISBN: </label>0404553273 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teachers.<br/>Teaching.<br/>Education, Secondary.<br/>Educational tests and measurements.