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Date and Time of the Query: 2019-04-19 T13:49:22 PDT
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For refcode 1974ApJ...194..223S:
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Ap. J.
1974 vol. 194 p. 223-243
SANDAGE, A., AND TAMMANN, G. A.
STEPS TOWARD THE HUBBLE CONSTANT. III. THE DISTANCE AND STELLAR CONTENT OF THE M101 GROUP OF GALAXIES
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