Upper Paleozoic, Mesozoic and Cainozoic spore and pollen assemblages in the North of Siberia and their stratigraphic signifcance
Reference:
Kara-Murza,E.N. et al. (1962)
Upper Paleozoic, Mesozoic and Cainozoic spore and pollen assemblages in the North of Siberia and their stratigraphic signifcance Pollen et Spores
Vol. 4 # 2 P. 356- 356