TY  - BOOK
AU  - Realuyo, Zenaida M.
AU  - Ilarde, Isabelina D.
TI  - Basic concepts in Earth Science
U1  - Fil 550 R229 1987  
PY  - 1987///
CY  - Manila
PB  - Goodwill Trading
KW  - Earth sciences-Study and teaching (Higher)
N1  - Includes bibliographical references and index
ER  -