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|All Authors / Contributors:||
S P Langley; Frank W Very; James Edward Keeler; National Academy of Sciences (U.S.)
|Description:||pt. 1, pages 13-42, 6 leaves of plates : illustrations ; 30 cm.|
|Series Title:||Memoirs of the National Academy of Sciences, v. 3, 2nd memoir.|
|Responsibility:||from researches made at the Allegheny observatory by S.P. Langley ; assisted by F.W. Very and J.E. Keeler.|