In Russian. Ermolova, Olga Nikolaevna. Analysis of secondary information sources on geology. Moscow: VIEMS, UNTI, 1972. Analiz istochnikov vtorichnoy informatsii po geologii. In Russian/Analysis of secondary geological information sources. All images are for identification of editions only. Several books of the same edition may be available. Please feel free to request photos of available books. SKU7042533