Biologiýa: Wersiýalaryň arasyndaky tapawut
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* [http://www.sbio.info "Вся Биология" taslamasy]
* [http://www.gsnti-norms.ru/norms/common/doc.asp?0&/norms/grnti/gr34.htm Биология]{{Dead link|date=August 2021 |bot=InternetArchiveBot |fix-attempted=yes }}: Государственный рубрикатор научно-технической информации (ГРНТИ).
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