William Usherwood (German Wikipedia)

Analysis of information sources in references of the Wikipedia article "William Usherwood" in German language version.

refsWebsite

Global rank German rank

18^th place

181^st place

harvard.edu (Global: 18^th place; German: 181^st place)

ui.adsabs.harvard.edu

J. M. Pasachoff, R. J. M. Olson, M. L. Hazen: The earliest comet photographs: Usherwood, Bond, and Donati 1858. In: Journal for the History of Astronomy, XXVII, 1996, S. 129–145 (bibcode:1996JHA....27..129P).