Crabbs, Lelah Mae,  1885- <br/><br/>
Measuring efficiency in supervision and teaching / 
by Lelah Mae Crabbs 
 - New York :  AMS Press,  1972 
 - vii, 98 p. :  ill. ;  22 cm. 
 - Contributions to education ; no.175. .
<br/><br/> Reprint of the 1925 ed., issued in series: Teachers College, Columbia University. Contributions to education, no. 175.  Originally presented as the author's thesis, Columbia. 
<br/><br/>Bibliography: p. 98. 
<br/><br/><label>ISBN: </label>0404551750 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teachers--Rating of<br/>Psychological tests