Before revision: Vega Geophysics, Ltd. in Russia Government agencies and smaller companies producing MT instrumentation for internal use include and the Russian Academy of Sciences (SPbF IZMIRAN); and the National Space Research Institute of Ukraine
After revision: Vega Geophysics, Ltd. in Russia Government agencies ; smaller companies producing MT instrumentation for internal use include and the Russian Academy of Sciences (SPbF IZMIRAN); and the National Space Research Institute of Ukraine