TY  - BOOK
AU  - Lianko, Aurora A.
TI  - Introduction to Earth Science
SN  - 9715740359
U1  - Fil 550 L613 2001  
PY  - 2001///.
CY  - Quezon City
PB  - Katha Pub.
KW  - Earth sciences-Study and teaching.
N1  - Includes bibliographical references and index
ER  -