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Author - title
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| details | Early Permian | India(Orissa) | Navale,G.K.B. et al. Petro-palynological study of the coals exposed near Gopalrasad of Talcher Coalfield (Orissa), India. | 1970 | |
| details | Early Permian | India(Madhya Pradesh) | Tiwari,R.S. Sporological succession in Purewa Seam, Singrauli Coalfield, (M.P.). | 1969 |