Image: HSLeavittHSCr13Fig2 1912
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Description: Figure 2, "Periods of 25 Variable Stars in the Small Magellanic Cloud" Harvard College Observatory Circular, vol. 173
Title: HSLeavittHSCr13Fig2 1912
Credit: "Periods of 25 Variable Stars in the Small Magellanic Cloud" Harvard College Observatory Circular, vol. 173
Author: Leavitt, Henrietta S; Pickering, Edward C
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License: Public domain
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