https://openlibrary.org/books/OL10237009M.opdsTheory and Observation of Normal Stellar Atmospheres Proceedings of the Third Harvard-Smithsonian Converence on Stellar Atmosphere2022-11-14T20:40:08ZOwen Gingerichhttps://openlibrary.org/authors/OL768596A/Owen_GingerichThe MIT PressJanuary 15, 1970487enghttps://openlibrary.org/books/OL10237009Mhttps://archive.org/details/TheoryandO_00_Gingurn:ISBN:0262070359urn:ISBN:97802620703556597869019248