TY  - BOOK
AU  - Bhola,Harbans Singh
TI  - Effective use of display material in school
U1  - 371.3071 
PY  - 1963///
CY  - New delhi
PB  - Central institute of education
KW  - EDUCATION
KW  - School material
KW  - শিক্ষাবিজ্ঞান
N1  - Bibliography
ER  -