"Lunar Halo with Mock Moons" in "The Aerial World," by Dr. G. Hartwig,
London, 1886. P. 220. Library Call Number QC863.4 H33 1886.
Image ID: libr0520, Treasures of the NOAA Library Collection
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of the U.S. Department of Commerce, National Oceanic & Atmospheric
NOAA Central Library
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May 12, 2014