TY  - BOOK
AU  -  Brummelen, Glen Van
AU  -  Brummelen, Glen Van
TI  - Heavenly mathematics: the forgotten art of spherical trigonometry 
SN  - 9781400844807
U1  - AV-Eb 516.24 2012
PY  - 2013///
CY  - USA
PB  - Princeton University Press
KW  - Spherical trigonometry
N1  - Includes index
ER  -