TY  - BOOK
AU  - National center for educational research and development 
ED  - Ministry of national education youth and sports 
TI  - Life science energy, sciences section: Pedagogical Guide
U1  - CRDP 373.7 Life Sci. Guide Gr.11s 
PY  - 2009///
CY  - Sin El Fil
PB  - National center for educational research and development 
KW  - Life Science -- Study and teaching (Secondary Grade 11) -- Pedagogical Guide
ER  -