TY  - BOOK
AU  - Petersen,James F.
AU  - Gabler,Robert E.
AU  - Sack,Dorothy
TI  - Earth and life sciences
SN  - 9789712396403
U1  - Fil. 500  
PY  - 2019///
CY  - Manila
PB  - Rex Book Store, Inc.
N1  - 500-599
ER  -