Puti razvitii︠a︡ feodalizma (Zakavkazʹe, sredni︠a︡i︠a︡ Azii︠a︡, Rusʹ, Pribaltika) /
Novoselʹt︠s︡ev, Anatoliĭ Petrovich.
Pashuto, Vladimir Terentʹevich.
Cherepnin, Lev Vladimirovich.
Moskva :  Nauka, 
1972.
Land tenure
Social classes