Nicholas Sergeevich Obraztsov (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Nicholas Sergeevich Obraztsov" in English language version.

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biodiversitylibrary.org

Obraztsov, N S; Obraztsov, N. S. (1955). "Die Gattungen der palaearktischen Tortricidae. I. Allgemeine Aufteilung der Familie und die Unterfamilien Tortricinae und Sparganothinae". Tijdschrift voor Entomologie. 98: 147–228.

yale.edu

images.peabody.yale.edu

Diakonoff, A. "Nicholas Sergeevich Obraztsov" (PDF). Journal of the Lepidopterists' Society.