- istina.msu.ru download/130247110/1rVWYy:…-MQNw/Key words: I.I. Sprygin, botany, flora, vegetation, protected area. ... Key words: Ivan Ivanovich Sprygin, natural scientist, chronicle of life events.
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- izvuz_est_eng.pnzgu.ru files/izvuz_est_eng.pnzgu.…I. I. Spry-gin. A historical review of Penza region and Penza city. 9. Sprygina L. I. Ivan Ivanovich Sprygin. Moscow, 1982.
- researchgate.net publication/302978910_Type_…tific Botanical collection with the international acronym of the PKM, founded in 1894 on the initiative of the largest naturalist Ivan Sprygin.Bulunamadı: named
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- ichbe.sgu.ru system/files_force/text-pdf/2022/04/…Sprygin Herbarium of Penza State University – the largest scien-tific Botanical collection with the international acronym of the PKM, founded in 1894 on the...Bulunamadı: named
- buyukansiklopedi.com Alexeï_VvedenskiIvan Sprygin ( ö ). ... 1919-1920'de, bir botanikçi-sistematist olarak Penza'nın doğal tarih müzesinin herbaryumuna ve Penza'nın zoobotanik bahçesine baktı.Bulunamadı: named
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