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  Title Copies
The Comet is Coming! 
Year: 1981 
ISBN: 0880290471 
ISBN 13: 9780670232161 
Skyways: Astronomy Handbook for Teachers 
Edition: 1st 
Year: 2009 
ISBN: 0981329233 
ISBN 13: 9780981329239 
Introduction to Webcam Astrophotography: Imaging the Universe With the Amazing, Affordable Webcam 
Year: 2006 
ISBN: 0943396867 
ISBN 13: 9780943396866 
A Guide to Skywatching 
Year: 2003 
ISBN: 1877019135 
ISBN 13: 9781877019135 
The Amazing Universe 
Edition: National Geographic 
Year: 1975 
ISBN: 0870441795 
ISBN 13: 9780870441790 
Coming of Age in the Milky Way 
Edition: Reprint 
Year: 2003 
ISBN: 0060535954 
ISBN 13: 9780060535957 
Bright Star Atlas 
Year: 1990 
ISBN: 0943396271 
ISBN 13: 9780943396279 
Voyages Through the Universe 
Edition: 2nd 
Year: 2000 
ISBN: 0030259835 
ISBN 13: 9780030259838 
Was Einstein Right?: Putting General Relativity To The Test 
Edition: 2 
Year: 1993 
ISBN: 0465090869 
ISBN 13: 9780465090860 
Many Moons: The Myth & Magic, Fact & Fantasy of Our Nearest Heavenly Body 
Edition: 1st 
Year: 1991 
ISBN: 0135533554 
ISBN 13: 9780135533550