Author:

Spasov,K.

Year:

1974

Title:

Stratigraphy of the Early Carboniferous of North-East Bulgaria

Foreign title:

O stratigrafii Nizhnego Karbona v Severo-Vostochnoi Bolgarii

Reference:

Spasov,K. (1974) Stratigraphy of the Early Carboniferous of North-East Bulgaria [ O stratigrafii Nizhnego Karbona v Severo-Vostochnoi Bolgarii ] Izvestiya na Geogicheskiya Institut Seriya Stratigrafiya i Lithologiya, Bulgarska Akademiya na Naukite,Doklady. Vol. 23 P. 5- 24

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