TY  - BOOK
AU  - National center for educational research and development
ED  - Ministry of national education youth and sports 
TI  - Building up mathematics: Pedagogical guide secondary education first year  (specimen)
U1  - CRDP 373.7 Math. Guide Gr.10 
PY  - 1998///
CY  - Sin El Fil
PB  - National center for educational research and development
KW  - Math -- Study and teaching (Secondary Grade 10) -- Pedagogical guide
ER  -