TY  - BOOK
AU  - Bilbao, Purita P. 
AU  -  (AND THREE OTHERS)
TI  - Teaching science in the elementary grades : : vol. 1 : chemistry and biology./ 
SN  - 	978-621-8035-64-5
U1  - Fil. 507 T255 2019 
PY  - 2019///
CY  - Quezon City : 
PB  - Lorimar Publishing , 
KW  - 1. Science -- ( study and teaching)
N1  - Includes Bibliographical references
ER  -