TY  - BOOK
AU  - Wiles, Jon
TI  - Supervision: a guide to practica
SN  - 0-13-046267-5
U1  - 658.3 
PY  - 2004///
CY  - Upper Saddle River, N.J. 
PB  - Pearson
KW  - supervisión escolar
ER  -