TY  - BOOK
AU  - Batubalani, A.M., compiler, editor. 
TI  - World famous astronomers and mathematicians
SN  - 9716680309
U1  - FIL 520.922 W89 1999  
PY  - 1999///
CY  - Manila : 
PB  - Loacan Publishing House, 
KW  - Astronomer
KW  - Mathematicians
N1  - Glossary: pages 94-98
ER  -