TY  - BOOK
AU  - Wiles, Kimball.
AU  - 
ED  - 
ED  - 
ED  - 
ED  - 
SN  - 2
PY  - 1967///46
CY  - Englewood Cliffs, N.J
PB  - Prentice-Hall
KW  - 
KW  - 2
KW  - 0
KW  - 6
KW  - 20
KW  - School supervision
N1  - Bibliography: p. 313-328; 5
ER  -