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BEALS CS, 1942, JRAS CANADA, V36, P145
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BEALS CS, 1942, PUB AAS, V10, P222
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BEALS CS, 1942, JRAS CANADA, V36, P201
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CHALONGE, 1939, ANN AP, V2, P256
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CHANDRASEKHAR, 1946, AP J, V104, P455
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ELVEY CT, 1930, AP J, V72, P284
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MORGAN, ATLAS STELLAR SPECTR