In 1820 he took part in a scientific expedition to Bokhara as a naturalist, and in 1826 became a member of the St. Petersburg Academy of Sciences.
In 1826 he became a member of the St. Petersburg Academy of Sciences. In 1820 he took part in a scientific expedition to Bokhara as a naturalist.
In 1820 he took part in a scientific expedition to Bokhara as a naturalist. In 1826 he became a member of the St. Petersburg Academy of Sciences.
In 1820 he took part in a scientific expedition to Bokhara as a naturalist. In 1826 he became a member of the St. Petersburg Academy of Sciences.