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Priority to JP8247976ApriorityCriticalpatent/JPS538601A/ja
Priority to CA282,534Aprioritypatent/CA1091612A/en
Priority to AU26994/77Aprioritypatent/AU517137B2/en
Publication of JPS538601ApublicationCriticalpatent/JPS538601A/ja
Publication of JPS5637272B2publicationCriticalpatent/JPS5637272B2/ja