최우진 오종기 2024-01-21T18:05:27Z 2024-01-21T18:05:27Z 2022-01-10 1997-09 https://pubs.kist.re.kr/handle/201004/143607 Clean technology in the non-ferrous metallurgical industries 비철금속산업의 청정기술 Article 3 비철금속, v.56, no.3, pp.1 - 19 비철금속 56 3 1 19 non-ferrous metallurgical industries clean technology recycling