TY  - BOOK
AU  - National center for educational research and development
ED  - Ministry of national education youth and sports
TI  - Life science secondary education first year  
U1  - CRDP 570.712 Life Sci. Gr.10 
PY  - 1998///
CY  - Sin El Fil
PB  - National center for educational research and development
KW  - Life Science - Study and teaching (Secondary Grade 10) -- Textbooks
ER  -