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Application filed by Wyzsza Szkola PedagogfiledCriticalWyzsza Szkola Pedagog
Priority to PL23712382ApriorityCriticalpatent/PL129717B2/en
Publication of PL237123A2publicationCriticalpatent/PL237123A2/en
Publication of PL129717B2publicationCriticalpatent/PL129717B2/en