TY  - BOOK
AU  - Henry Nelson B.
TI  - In-Service education for teachers,supervisors,and administrators: The Fifty-sixth yearbook of the National society for the study of education 
U1  - 371.146 HEN 
PY  - 1957///
CY  - Chicago
PB  - NSSE
N1  - Includes bibliographical references and index
ER  -