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Application filed by Inst Gornogo Dela Sibirskogo OfiledCriticalInst Gornogo Dela Sibirskogo O
Priority to SU843756646ApriorityCriticalpatent/SU1195014A2/ru
Application grantedgrantedCritical
Publication of SU1195014A2publicationCriticalpatent/SU1195014A2/ru