In Russian. Bars, Elena Antonovna. Methodological guide for the study of organic substances of groundwater in oil and gas-bearing areas. Moscow: Nedra, 1979 Metodicheskoe rukovodstvo po issledovaniyu organicheskikh veshchestv podzemnykh vod neftegazonosnykh oblastey/Methodological Guidance for the Study of Groundwater Organics in Oil and Gas-rich Areas In Russian. 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. SKU7650912