Back تصنيف:العلم في 1839 Arabic Катэгорыя:1839 год у навуцы Byelorussian Categoría:Ciencia de 1839 Spanish Kategoria:1839 zientzian Basque رده:علم در ۱۸۳۹ (میلادی) Persian קטגוריה:1839 במדע HE 분류:1839년 과학 Korean Kategori:Vitskap i 1839 NN Kategori:Vitenskap i 1839 NB Categoria:1839 na ciência Portuguese

Category:1839 in science

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