Correlation of Brown Coal Seams from the Provinces of Poznan and Bydgoszcz. Part 2 of stratigraphy of the Middle Miocene in Cental Poland based on spore and pollen analysis of Brown Coal from the Provinces of Bydgoszcz and Poznan.
Reference:
Doktorowicz-Hrebnicka,J. (1960)
Correlation of Brown Coal Seams from the Provinces of Poznan and Bydgoszcz. Part 2 of stratigraphy of the Middle Miocene in Cental Poland based on spore and pollen analysis of Brown Coal from the Provinces of Bydgoszcz and Poznan. Biuletyn - Instytutu Geologiczny
Vol. 157 P. 223- 243