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Application filed by Wyzsza Szkola PedagogfiledCriticalWyzsza Szkola Pedagog
Priority to PL28501590ApriorityCriticalpatent/PL162727B1/en
Publication of PL285015A1publicationCriticalpatent/PL285015A1/en
Publication of PL162727B1publicationCriticalpatent/PL162727B1/en