Asselian miospores from the South Urals. (In: The Carboniferous of the USSR. 8th International Congress of Carboniferous Stratigraphy and Geology. R.H.Wagner et al, editors)
Reference:
Faddeeva,I.Z. (1979)
Asselian miospores from the South Urals. (In: The Carboniferous of the USSR. 8th International Congress of Carboniferous Stratigraphy and Geology. R.H.Wagner et al, editors) Yorkshire Geological Society Occasional Publication
Vol. 4 P.