| Registros del 1 al 2 de 2 encontrados |
1.- Atlas for coal petrography of China
China National Administration of Coal Geology, ed.
Beijing: Univ. of Mining and Technology, 1996
I / 13 - 8 - 33
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2.- Major and minor elements in the hard coal from the Czech Upper Paleozoic basins
Pesek, Jiri...[et al.]
Prague: Czech Geological Survey, 2010
Czech Geological Survey Special Papers
I/15-7-18
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