For citations:
Chernykh V.V., Chuvashov B.I. Limitotipes of Lower Sakmarian and Artinskian stages boundary in the Urals. LITHOSPHERE (Russia). 2015;(1):35-52. (In Russ.)
Chernykh V.V., Chuvashov B.I. Limitotipes of Lower Sakmarian and Artinskian stages boundary in the Urals. LITHOSPHERE (Russia). 2015;(1):35-52. (In Russ.)