00450nam a2200157Ia 4500003000900000008004100009020001800050040001600068080001500084100001500099245005200114260004200166300001600208650004100224650002700265IN-BaIIA211028s9999    xx            000 0 eng d  a0-7153-5467-1  cIIA Library  a521.9bBEE  aBeet, E. A 0aMathematical astronomy for amateurscE. A. Beet  aNewton AbbotbDavid and Charlesc1972  aviii, 143p.  aAstronomy and Astrophysics Thesaurus  aMathematical astronomy