TY  - BOOK
AU  - Hosmer,George L.
TI  - Practical astronomy
U1  - 522 
PY  - 1946///
CY  - New York
PB  - John Wiley and Sons
KW  - Celestial Navigation
KW  - Astronomical Observations
KW  - Positional Astronomy
N1  - Includes index
ER  -