Stratigraficheskiĭ slovarʹ SSSR = Stratigraphic dictionary of the USSR : Kembriĭ, ordovik, silur, devon - Zanina, I. E. (Irina Evgenʹevna); Likharev, B. K. (Boris Konstantinovich), 1887- (Nedra, Leningr. otd-nie, 1975)