Ericaceae type C
- Citations total:
- 2
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| original | Early Tertiary | Japan(Hokkaido I.) | Tokunaga,S. Pollen analyses of some coal seams in the Akabira area, Ishikari Coal Field, Hokkaido | 1956 | |
| original | Early Tertiary | Japan(Hokkaido I.) | Tokunaga,S. Palynological study on Japanese Coal.Ii.Pollen stratigraphical investigations in the Coal Fields, Middle Hokkaido. | 1958 |