Douglass, Harl Roy,  1892- <br/><br/>
Democratic supervision in secondary schools / 
by Harl R. Douglass, Rudyard K. Bent and Charles W. Boardman 
 - 2nd ed. 
 - Boston :  Houghton Mifflin,  1961 
 - 354 p. :  ill. ;  22 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>School supervision, Secondary