Author:

Sivertseva,I.A.;Smirnova,A.N.

Year:

1972

Title:

Spore and pollen complexes of some Permian horizons of Upper Petchora Depression

Foreign title:

Sporovo-pyl'tsevye kompleksy Nefotorykh Gorizontov Permskikh otlozhenii verkhne-Pechorskoi Vpadiny

Reference:

Sivertseva,I.A. et al. (1972) Spore and pollen complexes of some Permian horizons of Upper Petchora Depression [ Sporovo-pyl'tsevye kompleksy Nefotorykh Gorizontov Permskikh otlozhenii verkhne-Pechorskoi Vpadiny ] Vestnik Leningradskogo Universiteta. Geologiya-Geografiya # 6 P. 74- 81

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