TY  - BOOK
AU  - Realuyo, Z.
AU  - Del Pan-Ilarde, Isabelina
TI  - Basic concepts in earth science
SN  - 971-11-1020-2
U1  - Fil. 550 R288 1999 
PY  - 1999///
CY  - Makati City, Philippines
PB  -  Goodwill Bookstore
N1  - Includes bibliographical references and index
ER  -