Sergey Narovchatov died in 1982.
Sergey Blazhko died in 1956.
Sergey von Freymann died in 1946.
Sergey Dyozhkin died on January 5, 2000.
Sergey Sergeyevich Smirnov - geologist - died in 1947.
Sergey Yustinovich Bagotsky died on 1953-03-15.
Sergey Narovchatov was born in 1919.
Sergey Lazo died in 1920.
Sergey Merkurov died in 1952.
Sergey Shupletsov died in 1995.
Sergey Zaryanko died in 1871.
Sergey Glinka died in 1847.
Sergey Solovyov died in 1879.
Sergey Sazonov died in 1927.
Sergey Voychenko died in 2004.
Sergey Belavenets died in 1942.
Sergey Korzhukov died in 1994.
Sergey Shubinsky died in 1892.