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Exercise 1
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Interactive!
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Exercise 2
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Exercise 3
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Exercise 4
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Exercise 6
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Exercise 7
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Scientific papers
Freedman, W.L., Madore, B.F., Mould, J.R. et al., Nature 371 (1994), 757 - 762,
Distance to the Virgo cluster galaxy M100 from Hubble Space Telescope observations of Cepheids
