TY  - BOOK
AU  - Risk,Thomas M
AU  -  
TI  - Princples and Practices of Teaching in Secondary School:  
SN  -  
U1  - 373.1 
PY  - 1951///
CY  - New Delhi
PB  - Euresia Publishing
KW  - Education
KW  - শিক্ষাবিজ্ঞান
ER  -