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Bulletin de l'Académie Impériale des Sciences de St.-Pétersbourg. VI série, 1910, Volume 4, Issue 6, Pages 477–480
(Mi im7036)
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On the discovery of the calcareous concretions known as coal balls in one of the coal seams of the carboniferous strata of the Donetz basin
M. D. Zalessky (Zalěsskij)
Citation:
M. D. Zalessky (Zalěsskij), “On the discovery of the calcareous concretions known as coal balls in one of the coal seams of the carboniferous strata of the Donetz basin”, Izv. Math., 4:6 (1910)
Linking options:
https://www.mathnet.ru/eng/im7036 https://www.mathnet.ru/eng/im/v4/i6/p477
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