Leonid Portenko (English Wikipedia)

Analysis of information sources in references of the Wikipedia article "Leonid Portenko" in English language version.

refsWebsite

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1semanticscholar.org

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doi.org

Kumari, E. (1974). "Leonid Alexandrovich Portenko 1896-1972". Journal für Ornithologie. 115 (3): 365–367. Bibcode:1974JOrni.115..365K. doi:10.1007/BF01644330. S2CID 43318182.

harvard.edu

ui.adsabs.harvard.edu

Kumari, E. (1974). "Leonid Alexandrovich Portenko 1896-1972". Journal für Ornithologie. 115 (3): 365–367. Bibcode:1974JOrni.115..365K. doi:10.1007/BF01644330. S2CID 43318182.

semanticscholar.org

api.semanticscholar.org

Kumari, E. (1974). "Leonid Alexandrovich Portenko 1896-1972". Journal für Ornithologie. 115 (3): 365–367. Bibcode:1974JOrni.115..365K. doi:10.1007/BF01644330. S2CID 43318182.

zin.ru

"Department of Ornithology: History". Zoological Institute of the Russian Academy of Sciences. Retrieved 2014-04-18.