TY  - BOOK
AU  - "Evans, N.D." 
AU  - "Neagley, Ross L."
TI  - "Handbook for effective supervision of instruction, 3rd ed."
U1  - Ref/371.2/NH  21
PY  - 1977///
CY  - الإسكندرية
PB  - Prentice hell india
KW  - Educational institutions
ER  -