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Orange County Astronomers
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R.T.M.C. 82
Orange County Astronomers, Riverside Astronomical Society, San Bernardino Valley Astronomical Society, Calif.) Riverside Telescope Makers Conference (1982 Big Bear Lake · Published by the Orange County Astronomers for and in cooperation with the Riverside Astronomical Society and San Bernardino Valley Astronomical Society
89 sayfa · 1982
Telescopes / Congresses / Astronomical instruments / Astronomy