Горючие сланцы. Vol.16, №3: Characteristics of oil shales and shale-like rocks of known deposits and out crops
английский/Characteristics of oil shales and shale-like rocks of known deposits and out crops / K.Urov a. A.Sumberg.Characteristics of oil shales and shale-like rocks of known deposits and out crops / K.Urov a. A.Sumberg.Characteristics of oil shales and shale-like rocks of known deposits and out crops.Б. м./, 1999 ( ). - 1999.Characteristics of oil shales and shale-like rocks of known deposits and out crops. Б. м., 1999 .Горючие сланцы / АН СССР, АН ЭССРVol.16, №3