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OPENSTAX ASTRO
19.4 The H–R Diagram and Cosmic Distances
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OPENSTAX ASTRO
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Chapter 19
19.4 The H–R Diagram and Cosmic Distances
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19.4 The H–R Diagram and Cosmic Distances
19.4 The H–R Diagram and Cosmic Distances
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19.3 Variable Stars: One Key to Cosmic Distances
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Chapter 20