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The spectroscope and its work (1910)
Newall, H. F · London : Society for Promoting Christian Knowledge · leaf 183
go r ^ c2 pq § 2 ps Plate VIII. … DATE DUE GAYLORD PRINTCDINU S.A.Spectroscope · Spectrum analysis
Internet Archive · Wellesley College Library · Public Domain Mark 1.0. Free to use for anything.
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