Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Passage: Christian von Steven (Rasha: Христиан Христианович Стевен - Khristian Khristianovich Steven; 19 Janairu 1781, a Fredrikshamn, Finland <unk> 30 Afrilu 1863, a Simferopol, Crimea) wani masanin tsirrai ne na Rasha da masanin ilimin halittu.  Tambaya: Yaushe von Steven ya mutu?
30 ga Afrilu 1863