TY  - BOOK
AU  - National center for educational research and development 
ED  - Ministry of national education youth and sports 
TI  - Physics: Secondary education second year humanites section
U1  - CRDP 530.712 Phys. EB11h 
PY  - 1999///
CY  - Sin El Fil
PB  - National center for educational research and development 
KW  - Physics -- Study and teaching (Secondary Grade 11) -- Textbooks
KW  - Humanites section -- Physics -- Study and teaching (Secondary Grade 11) -- Textbooks
ER  -