Title: Gagarinskiĭ seminar
Subjects: Congresses, Homes and haunts, Nobility, Intellectual life, History, Manors
Places: Russia (Federation), Porkhovskiĭ raĭon, Porkhovskiĭ raĭon (Russia)
People: Andreĭ Grigorʹevich Gagarin kni͡azʹ (1855-1920), A. P. Gagarin kni͡azʹ
Time periods: 20th century