The 1992 edition (edited by P. Kenneth Seidelmann) is now out of print but may be available as a free PDF from official government sources such as:
Updated for modern reference systems and published by University Science Books. The 1992 edition (edited by P
: Brief excerpts and tables of contents are sometimes available on Google Books . Key Content of the Supplement The 1992 edition (edited by P
The foundation for joint US/UK astronomical data. The 1992 edition (edited by P
The Supplement is used to interpret the yearly data tables in the Astronomical Almanac by explaining: The Explanatory Supplement to the Astronomical Almanac