TY  - BOOK
AU  - National center for educational research and development 
ED  -  Ministry of national education youth and sports 
TI  - Themes: Secondary education second year sciences section 
U1  - CRDP 428.24 En. Gr.11s 
PY  - 2006///
CY  - Sin El Fil
PB  - National center for educational research and development 
KW  - English language -- Study and teaching (Secondary Grade 11) -- Textbooks
KW  - Sciences section -- English language -- Study and teaching (Secondary Grade 11) -- Textbooks
ER  -