Spears, Harold. <br/><br/>
Improving The Supervision Of Instruction. 

 -  Prentice-Hall  1953 
 - XII, 478 P. 22 CM. 
<br/><br/> PRENTICE-HALL EDUCATION SERIES 
<br/><br/><label>Dewey Class. No.: </label>371.207'0973 SPE 1953