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Title An Atlas of Sunspot Umbral Spectra in the Visiable from 15,000 to 25,500 cm -1 (3920 to 6664 A). Author Wallace L. Co-authors Hinkle K. Livingston W.C. Issue 1 Issue data Tucson : National Solar Observatory , February 2000 Copy count 1, currently available 0, at library only 1 Title An Atlas the Solar Spectrum in the Infrared from 1850 to 9000 cm-1 (1.1 to 5.4 micro m) Author Livingston W. Co-authors Wallace L. Issue 1 Issue data Tucson : National Solar Observatory, National Optical Astronomy Observatories, Kitt Peak National Observatory , July 1991 Copy count 1, currently available 0, at library only 1