Author:

Olferev,A.G.

Year:

1976

Title:

Stratigraphy of Triassic deposits of north-eastern Bulgaria

Foreign title:

Stratigrafiya Triasovykh otlozhenii Severo-Vosto Chnoi Bolgarii

Reference:

Olferev,A.G. (1976) Stratigraphy of Triassic deposits of north-eastern Bulgaria [ Stratigrafiya Triasovykh otlozhenii Severo-Vosto Chnoi Bolgarii ] Izvestiya Akademii Nauk SSSR, Seriya Geologicheskaya Vol. 1976 # 6 P. 88- 100

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