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- [3] On the age and the conditions of formation of brown coals in the Upper Zeya plain COMPTES RENDUS DE L ACADEMIE DES SCIENCES DE L URSS, 1935, 9 : 355 - 359
- [6] REACTIVITY AND REACTIONS OF BROWN COALS ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY, 1989, 198 : 2 - FUEL