TY  - BOOK
AU  - Todhunter,I.
TI  - Spherical Trigonometry: For the Use of Colleges and Schools
AV  - QA 
PY  - 2006///
CY  - Salt Lake City, UT
PB  - Project Gutenberg
KW  - Spherical trigonometry
N1  - Release date is 2006-11-12; Original publication data not identified
UR  - https://www.gutenberg.org/ebooks/19770
ER  -