Foraminifera source request

You have requested access to download the full text of the source (SourceID: 448938):
Dutkevich, G. A. (1939). Otryad Foraminifera [Order Foraminifera]. In: Gorskiy, I. I. (Ed.), Атлас руководящих форм ископаемых фаун СССР - Atlas of the leading forms of the fossil fauna of the USSR. Leningrad, Tsentralnyi Nauchnoissledovatelskii Geologo-razvedochnyi Institut. 5: 27-49.