{"total_count":21,"results":[{"id":39821,"original_title":"Extraction and refining of the rarer metals : a symposium on extraction metallurgy of some of the less common metals arranged by the Institution of Mining and Metallurgy, held on 22nd and 23rd March, 1956, at the Royal Society of Arts, John Adam Street, London","title_alternative":null,"title_transcription":"  ","title_alternative_transcription":null,"pub_date":"1957","statement_of_responsibility":null,"creators":[{"full_name":"Institution of Mining and Metallurgy (Great Britain)"},{"full_name":"Symposium on Extraction Metallurgy of Some of the Less Common Metals"}],"contributors":[],"publishers":[{"full_name":"Institution of Mining and Metallurgy"}],"publication_place":null,"extent":"xiii, 444 p., [14] p. of plates ; 23 cm","dimensions":null,"identifiers":[],"subjects":[],"classfifications":[{"classification_type":"udc","term":"669.2"}],"access_address":null,"items":[{"item_identifier":"204122","shelf":"Books 27"}],"created_at":"1901-12-31T09:00:00.000+09:00","updated_at":"2026-03-19T13:27:08.014+09:00"}]}