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1 National Radio Astronomy Observatory (U.S.) / http://id.loc.gov/authorities/names/n50064786 : Recollections of "Tucson operations" : the millimeter-wave observatory of the National Radio Astronomy Observatory / by M.A. Gordon  2005 1
2 National Radio Astronomy Observatory (U.S.) -- History : Open skies : the National Radio Astronomy Observatory and its impact on US radio astronomy / Kenneth I. Kellermann, Ellen N. Bouton, Sierra S. Brandt  2020 1
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