TY  - BOOK
AU  - Leanko, Aurora
TI  - Introduction to earth science
SN  - 9715740359
AV  - QE 28 .L693 2001
PY  - 2001///
CY  - Quezon City
PB  - Katha Publishing Co., Inc.
KW  - Science
KW  - Earth
KW  - Solar System
KW  - Galaxies
N1  - Includes Bibliographical Reference and Index
ER  -