TY  - BOOK
AU  - National center for educational research and development 
ED  - Ministry of national education youth and sports 
TI  - Building up mathematics: Second year humanities section
U1  - CRDP 510.712 Math. Gr.11h 
PY  - 1999///
CY  - Sin El Fil
PB  - National center for educational research and development 
KW  - Math-- Study and teaching (Secondary Grade 11) -- Textbooks
ER  -