| original |
Visean |
|
USSR(Ukrainian SSR) |
Ishchenko,A.M. Spores and pollen of Lower Carboniferous deposits of the Western extension of the Donetz Basin and their values for stratigraphy. |
1956 |
| details |
Namurian |
|
Poland |
Jachowicz,A. New data concerning the occurence of microspores and pollen grains in the Namurian deposits of the north-eastern part of the Upper Silesian Coal Basin. |
1964 |
| details |
Middle Pennsylvanian |
|
Poland |
Jachowicz,A. Megaspore studies. (In: The Results of Borek Szlachecki Bore-Hole. S.Alexandrowicz et al, editor). |
1968 |