TY  - BOOK
ED  - The Nautical Almanac Offices of the United Kingdom and the United States of America
TI  - Explanatory Supplement to The Astronomical Ephemeris and The American Ephemeris and Nautical Almanac
PY  - 1961///
CY  - London
PB  - Her Majesty's Stationery Office
KW  - Astrometría
ER  -