| original |
Early Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Pollen analysis of the known coal seams in the Biba Bibai area, Sorachi District, Ishikari Coal Fields, Hokkaido. |
1955 |
| original |
Early Tertiary |
|
Japan(Hokkaido I.) |
Tokunaga,S. Palynological study on Japanese Coal.Ii.Pollen stratigraphical investigations in the Coal Fields, Middle Hokkaido. |
1958 |
| original |
Middle Miocene |
|
Yugoslavia |
Weyland,H. et al. Investigations of the spore and pollen floras of some Yugoslav and Greek Brown Coals |
1958 |
| original |
Late Neogene |
|
Iceland |
Schultz,G. Some further pollen analytical studies of Iceland Lignite. |
1967 |
| original |
Early Tertiary |
|
Canada(British Columbia) |
Boneham,R.F. Palynology of three Tertiary Coal Basins in South-Central British Columbia |
1968 |