TY  - BOOK
AU  - Todhunter,I.
TI  - Spherical Trigonometry: For the Use of Colleges and Schools
AV  - QA 
PY  - 2006///
PB  - Project Gutenberg
KW  - Spherical trigonometry
N1  - Public domain in the USA; Electronic text
UR  - http://www.gutenberg.org/ebooks/19770
ER  -