TY  - BOOK
AU  - Keyod Grace B. 
TI  - The earth's twin problem: : global warming and water acidification
SN  - 2094-8042
U1  - DPer 370.105 M72 Jan-Dec 2012 V. 60-61   
PY  - 2012///
CY  - Philippines: 
PB  - In the Grade School, Inc., 
KW  - Greenhouse effect
N1  - The Modern Teacher
ER  -