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Priority to JP699373ApriorityCriticalpatent/JPS545398B2/ja
Publication of JPS49101274ApublicationCriticalpatent/JPS49101274A/ja
Publication of JPS545398B2publicationCriticalpatent/JPS545398B2/ja
Raw mineral material consisting of triple mineral layers having reversiblly expansible crystal state on large area* and having mutually separated crystal layers
Raw mineral material consisting of triple mineral layers having reversiblly expansible crystal state on large area* and having mutually separated crystal layers