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  1. 1
    Blazing a Ghostly Trail ISON and Great Comets of the Past and Future /
    by Grego, Peter
    Published 2014
    Texto Completo
    Electronic eBook
  2. 2
    Mars and How to Observe It
    by Grego, Peter
    Published 2012
    Texto Completo
    Electronic eBook
  3. 3
    Galileo and 400 Years of Telescopic Astronomy
    by Grego, Peter , Mannion, David
    Published 2010
    Texto Completo
    Electronic eBook
  4. 4
    Astronomical Cybersketching Observational Drawing with PDAs and Tablet PCs /
    by Grego, Peter
    Published 2009
    Texto Completo
    Electronic eBook
  5. 5
    Venus and Mercury, and How to Observe Them
    by Grego, Peter
    Published 2008
    Texto Completo
    Electronic eBook
  6. 6
    Venus and Mercury, and how to observe them /
    by Grego, Peter
    Published 2008
    Texto completo
    Electronic eBook
  7. 7
    The Moon and How to Observe It
    by Grego, Peter
    Published 2005
    Texto Completo
    Electronic eBook