In-service education for teachers, supervisors, and administrators / 
edited by Nelson B. Henry. 
 - Chicago :  NSSE,  1957 
 - xiv, 376 p. ;  24 cm. 
 - Yearbook of the National Society for the Study of Education ;  56th, pt. 1 .
 - Yearbook of the National Society for the Study of Education ;  56th, pt. 1 .
<br/><br/> Includes index. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Teachers--In-service training.
<br/><br/><label>Dewey Class. No.: </label>371.12  / INS 1957