Title: Zhiznʹ i borʹba kni︠a︡zi︠a︡ Petra Dolgorukova
Subjects: Intellectuals, Biography, Liberalism, History
Places: Russia
People: Petr Dolgorukov kni︠a︡zʹ (1816-1868)
Time periods: 19th century, Alexander II, 1855-1881