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(Grahn) (30.6.1819, , - 4.4.1907, ), , . . . 7 , 1829 - (", " , . . ). 1834 - -- " " . 1835 . ("" ), . "" ˸ (1836), " " (1837). 1838 . " " (. . ) "" (. . ), . 1839 . 1839-42 , 1843 , 1845-46 . . . . . . , . . "--" . (1845, ) . ("", 1845, "" , 1846). 1848-56 . 1856 , (1858-61) (1869-75). . ("" ). . . . , , , . ("" .), , . ("" .), . . .

(: . , , 1981)
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