Citation:
Withbroe G L, Dupree A K, Goldberg L, Huber M C E, Noyes R W, Parkinson W H, Reeves E M. Coronal Electron Density Maps for 7 March, 1970, Derived from Mgx \ensuremathłambda625 Spectroheliograms (Papers presented at the Proceedings of the International Symposium on the 1970 Solar Eclipse, held in Seattle, U. S. A. , 18-21 June, 1971.)}. \solphys. 1971;21 (2) :272-280.