TY  - BOOK
AU  - George Thoppil, 
TI  - Ushus
U1  - 521.09 
PY  - 1976///
CY  - Quilon
PB  - Un Known
KW  - GENERAL STACK
KW  - NATURAL SCIENCE& MATHEMATICS
KW  - ASTRONOMY & ALLIED SCIENCE
KW  - CELESTIAL MECHANICSGeneralia
ER  -