Back 1861 in science English 1861 en science French 1861 במדע HE 1861 a tudományban Hungarian Науката во 1861 година Macedonian Vitenskapsåret 1861 NB 1861 na ciência Portuguese 1861 год в науке Russian Vetenskapsåret 1861 Swedish 1861 nî kho-ha̍k ZH-MIN-NAN
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