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New eJAAVSO preprint: The Hubble Plate of 1923

(ej158): "The Hubble Plate of 1923: A Story of Pink Polyethylene" by D. R. Soderblom

http://www.aavso.org/ejaavso

Keywords:
AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484