Perepiska 1867-1873 gg. /
Kovalevskiĭ, A. O.(Aleksandr Onufrievich)
Kovalevskiĭ, V. O.(Vladimir Onufrievich)
Moskva : Nauka,
1988.
At head of title: Akademii︠a︡ nauk SSSR. Arkhiv AN SSSR.
Includes index.