ScienceEmission Bands of Erbium Oxide: A ConfirmationEdward L. Nichols, Horace L. HowesPublished Jan 13, 1922• 0 citationsPublisherAbstractArticle MetricsDownloadsCitationsNo data available.01AugSepOctNovDecJan30Total6 Months12 MonthsTotal number of downloads for the most recent 6 whole calendar months.DOI10.1126/science.55.1411.53.a