Moon Kil Choo (K.C) Ghim Young Sung KIM YONG PYO KIM JIN YOUNG 2024-01-13T17:01:48Z 2024-01-13T17:01:48Z 2021-09-29 https://pubs.kist.re.kr/handle/201004/109203 English Seoul Metropolitan area Air pollution trends and countermeasures of Seoul Metropolitan area last 20 years Conference 1 A&WMA's 92nd Annual Meeting & Exhibition, 1999. 6. 20-24, pp.[computer file] A&WMA's 92nd Annual Meeting & Exhibition, 1999. 6. 20-24 [computer file] [computer file] US