TY  - BOOK
AU  - National center for educational research and development
ED  - Ministry of national education youth and sports
TI  - Building up mathematics secondary education first year (specimen)
U1  - CRDP 510.712 Math. Gr.10 
PY  - 1998///
CY  - Sil El Fil
PB  - National center for educational research and development
KW  - Math -- Study and teaching (Secondary Grade 10) -- Textbooks
ER  -