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Author - title
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| details | Recent | Nd | Potonie,R. Position of the Paleozoic spore genera in the natural system. | 1954 | |
| details | Paleozoic | Nd | Potonie,R. The spores of Palaeozoic plants in the natural (Morphologic) system | 1954 | |
| details | Early Gondwana | India(Bihar) | Sen,J. Principles and problems of microflora correlations of Indian Coal Seams with special reference to Karharbari Coalfield. | 1953 |