TY  - BOOK
TI  - Philippine science encyclopedia: mathematics and physical sciences
AV  - Q 121  P45 1991
PY  - 1987///]
CY  - Taguig, Metro Manila
PB  - The National Research Council of the Philippines
KW  - Science
KW  - Encyclopedias
KW  - Mathematics
KW  - Earth sciences
N1  - Includes index
ER  -