John Grigg (Spanish Wikipedia)

Analysis of information sources in references of the Wikipedia article "John Grigg" in Spanish language version.

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harvard.edu

W.W. Campbell, Wm. Pierson, Chas. Burckhalter: (Forty-fifth) Award of the Donohoe Comet-Medal. Publications of the Astronomical Society of the Pacific, Bd. 15 (1903), Nr. 91, S. 202, „for his discovery of an unexpected comet on April 16, 1903“ (online)
W.W. Campbell, C.D. Perrine, Chas. Burckhalter: (Sixty-third) Award of the Donohoe Comet-Medal. Publications of the Astronomical Society of the Pacific, Bd. 20 (1908), Nr. 119, S. 93, „for his discovery of an unexpected comet on April 9, 1907“ (online)