TY  - BOOK
AU  - Allas, Ian Mark F.
AU  - Espinosa, Allen A.
AU  - Navarette, Bonifacio V. 
TI  - Discover science 9: teacher's guidebook for essential understanding 
SN  - 9789714605749
U1  - 502.02/Al526 23
PY  - 2014///
CY  - Makati City
PB  - DIWA Learning Systems, Inc., 
KW  - Science
KW  - Guidebooks
KW  - Study and teaching (Secondary)
ER  -