Vera Wallen books & textbook
Alt-Az Initiative : Telescope, Mirror, and Instrument Development
Russell M. Genet Jolyon M. Johnson Vera Wallen
Collins Foundation Press /2010-01-01 Paperback
isbn-10: 0978844149 / isbn-13: 9780978844141
Small Telescopes and Astronomical Research (The Astronomy Series, 1st)
Russell M. Genet Jolyon M. Johnson Vera Wallen
Collins Foundation Press /2010-01-01 Flexibound
isbn-10: 0978844130 / isbn-13: 9780978844134
