Explanatory supplement to the Astronomical almanac / prepared by the Nautical Almanac Office, U.S. Naval Observatory ; with contributions from H.M. Nautical Alamanac Office ; with contributions from H.M. Nautical Almanac Office, Royal Greenwich Observatory, ... [et al.] ; edited by P. Kenneth Seidelmann.
Imprint
Mill Valley, Calif. : University Science Books, c1992.