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Lower Carboniferous microfloras of Spitsbergen: part two.
| Playford, G. | |
| 1963 | |
| Palaeontology, v.5, no.4, p.619-678, pl.8895 | |
| Lower Carboniferous microfloras of Spitsbergen: part two. |
Playford, G., 1963b: Lower Carboniferous microfloras of Spitsbergen: part two; Palaeontology, v.5, no.4, p.619-678, pl.8895