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Title: Study of the broadening of coronal lines in active centers
Date: 1954-03-03
Author/Creator: Donald E. Billings, Charlotte Pecker, Walter Orr Roberts

Title: Identification of the yellow coronal line: A5694.4
Date: 1954-02-24
Author/Creator: Charlotte Pecker, Donald E. Billings, Walter Orr Roberts

Title: Utilization of transit of mercury for research purposes
Date: 1953-10-08
Author/Creator: J. H. Rush

Title: Possible test of response of atmosphere to solar corpuscular streams
Date: 1953-03-26
Author/Creator: Dorothy E. Trotter, Walter Orr Roberts

Title: Flare activity index
Date: 1953-01-19
Author/Creator: Donald E. Billings, Dorothy E. Trotter

Title: A contribution to the study of the relations between solar flares and sunspot groups
Date: 1951-10-23
Author/Creator: Bruno Witte

Title: [Emission line corona]
Date: 1951-10-10
Author/Creator: Walter Orr Roberts

Title: Brondened H? absorption lines spectra, 14 May 1951
Date: 1951-09-08
Author/Creator: Bruno Witte, Walter Orr Roberts

Title: Heisenberg's theory of isotropic turbulence in inhomogeneous turbulence fields
Date: 1951-07-25
Author/Creator: Eugene N. Parker

Title: Summary of status of Thomas' work on statistically steady state computations
Date: 1951-07-16
Author/Creator: Walter Orr Roberts

Title: Coronagraph at Climax Observatory
Date: 1940-01-01

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