TY  - BOOK
AU  - HANN JAMES.
TI  - SPHERICAL TRIGONMENTRY
U1  - 62 ढ 49 
PY  - 1849///
PB  - JOHN WEALE, LONDON.
KW  - SPHERICAL TRIGONMENTRY
KW  - एस.बी
N2  - एस.बी
ER  -