Trilobites of the Lower and Middle Devonian section of the north-eastern slope of Salair and their palaeontological characteristics. Mezhvedomstv. Stratigraf. Komitet. Inst. Geol. Geofiz. Sibirsk. Otdel. , Akad. Nauk SSSR (Ref. not ); 1968, Trilobites (De
