TY  - BOOK
AU  - Realuyo, Zenaida M.
AU  - Ilarde, Isabela D.
TI  - Basic concepts in earth science
SN  - 971-11-1020-2
U1  - Fil. 550 R288 2001 
PY  - 2001///
CY  - Quezon City
PB  - JMC Press, 
KW  - Earth science
N1  - Includes bibliographies; Originally published: JMC Press. 1999
ER  -