Comparison of Satellite and Rocket Coronal Observations around April 13, 1979 Howard, R. A. ; Michels, D. J. ; Koomen, M. J. ; Sheeley, N. R., Jr. ; Kohl, J. L. ; Munro, R. H. ; Weiser, H. Abstract Publication: Bulletin of the American Astronomical Society Pub Date: March 1979 Bibcode: 1979BAAS...11..408H