Title: 50 let poiskov i otkrytiĭ
Subjects: History, Akademii︠a︡ nauk SSSR, Akademii︠a︡ nauk SSSR. Kazanskiĭ filial, Humanities, Akademii͡a nauk SSSR. Kazanskiĭ filial, Akademii͡a nauk SSSR