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Priority to JP50156702ApriorityCriticalpatent/JPS5280626A/ja
Publication of JPS5280626ApublicationCriticalpatent/JPS5280626A/ja
Publication of JPS5418052B2publicationCriticalpatent/JPS5418052B2/ja
JP50156702A1975-12-261975-12-26Method of constructing shelf in reinforced concrete to inwall surface of tunnel with narrow section
GrantedJPS5280626A
(en)