TY  - BOOK
AU  - National center for educational research and development 
ED  - Ministry of national education youth and sports 
TI  - Chimestry, pedagogical guide: Second education, second year sciences section  
U1  - CRDP 373.7 Chim. Guide Gr.11s 
PY  - 1999///
CY  - Sin El Fil
PB  - National center for educational research and development 
KW  - Chimestry--Study and teaching (Secondary Grade 11) -- Pedagogical guide
KW  - Chimestry--Study and teaching (Secondary Grade 11) -- Pedagogical guide--Sciences section
ER  -