TY  - BOOK
AU  - Realuyo, Zenaida M.
TI  - Basic concepts of earth science
SN  - 971-11-1020-2.
U1  - Fil. 550 R288b 1999 
PY  - 1999///
CY  - Makati City : 
PB  - Goodwill Trading Co., Inc.
KW  - 1. Earth sciences
N1  - Includes bibliographical references and index
ER  -