Title: Materialy I͡Ubileĭnoĭ sessii, posvi͡ashchennoĭ 50-letii͡u Instituta geologii Akademii nauk Azerbaĭdzhanskoĭ SSR
Subjects: Akad. I.M. Gubkin adnya Ġeoloġii̐a Institutu, Congresses, Geology