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I<Astronomical  Formulae for Calculators> by B<Jean Meeus, Third Edition,
Willmann-Bell, 1985>.  A must-have.

I<Planetary  Programs  and  Tables  from  -4000  to  +2800>  by  B<Pierre
Bretagnon  and Jean-Louis Simon, Willmann-Bell, 1986>.  If you want the
utmost  (outside  of  JPL)  accuracy  for  the  planets,  it's   here.

I<Celestial BASIC> by B<Eric Burgess, Revised Edition, Sybex, 1985>.  Very
cookbook oriented, and many of the algorithms are hard to dig  out  of
the turgid BASIC code, but you'll probably want it anyway.

Many of these references can be obtained from Willmann-Bell, P.O.  Box
35025,  Richmond,  VA 23235, USA.  Phone: (804) 320-7016.  In addition
to their own publications, they stock most of the standard  references
for mathematical and positional astronomy.

=head1 LICENCE

This  program is in the public domain: "Do what thou wilt shall be the
whole of the law".