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Are you Roger W. Sinnott, author of the books below?
Sky & Telescope's Pocket Sky Atlas by Roger W. Sinnott Ngc 2000.0 by Roger W. Sinnott Millennium Star Atlas by Roger W. Sinnott NGC 2000.0 by Roger W. Sinnott Sky Catalogue 2000.0 by Roger W. Sinnott Millennium Star Atlas by Roger W. Sinnott Sky Catalogue 2000.0 by Roger W. Sinnott Sky & Telescope's Pocket Sky Atlas by Roger W. Sinnott Kosmos Sternatlas kompakt by Roger W. Sinnott Sky & Telescope's Pocket Sky Atlas by Roger W. Sinnott (30-Ma... by Roger W. Sinnott


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