TY  - BOOK
AU  - Gregorio, Herman C.
TI  - Principles and methods of teaching
SN  - 9718711082
AV  - LB 1025 .G821 1976  
PY  - 1976///
CY  - Quezon City : 
PB  - R.P. Garcia, 
N1  - Includes appendix and index
ER  -