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Application filed by Виттек Г.filedCriticalВиттек Г.
Priority to SU16075ApriorityCriticalpatent/SU12651A1/en
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Тип. Гидрогр. Упр. Управл. В,-М. Сил РККА. Ленинград, здание Гл. Адмиралтейства,Type of. Hydro Exercise Manage In, -M. Forces of the Red Army. Leningrad, building Gl. Admiralty,