TY  - BOOK
AU  - Kells,Lyman M.
AU  - Kern,Willis F.
AU  - Bland,James R.
TI  - Spherical trigonometry,: with naval and military applications,
U1  - 516.244 
PY  - 1942///
CY  - New York, London
PB  - McGraw-Hill book company, inc.
KW  - Spherical trigonometry
KW  - MCE
N1  - "Answers": p. 153-163
ER  -