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Author - title
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Year
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details | Ladinian | Carnian | USSR(Urals) | Tuzhikova,V.I. Lithology and stratigraphy of the Lower Mesozoic deposits of the Urals. (In: The history of the Lower Mesozoic accumulation of Coals in the Urals) | 1973 |
details | Liassic | USSR(Urals) | Faddeeva,I.Z. Palynological characteristics of Lower Mesozoic Coal deposits of Kazakhstan. (In: History of Lower Mesozoic Coal accumulation in Kazakhstan. Part 3) | 1963 |