Foraminifera source request

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Marfenkova, M. M. (1978). Фораминиферы и стратиграфия нижнего и среднего визе Южного Казахстана - Foraminifera and stratigraphy of Lower and Middle Visean from Southern Kazakhstan. Тр. ИГиГ СО АН СССР - Proceedings of the Institute of Geology and Geophysics, Siberian Filiale of the Academy of sciences USSR. 386: 78-99.