Richard Irwin Mitchell

Affiliations: 
1955-1959 Lowell Observatory 
Website:
https://baas.aas.org/pub/richard-irwin-mitchell-1927-1990
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"Richard Irwin Mitchell" OR "Richard I Mitchell"
Bio:

(1927 - 1990)
http://articles.adsabs.harvard.edu//full/1954ApJ...120..274M/0000277.html I wish to thank Dr. Otto Struve for suggesting this problem