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Author (up) Title Year Publication Volume Pages
Kennard, D.C.; Chamberlin, V.D. All-night Light for Layers 1931 Bulletin 476
Strutt, R.J. On a night sky of exceptional brightness, and on the distinction between the polar aurora and the night sky 1931 Proceedings of the Royal Society of London. Series A, Containing Papers of a Mathematical and Physical Character 131 376-381