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단독Calcium
[단독]Calcium chloride attack? All the fish in the Han River estuary disappeared.
![[단독]Calcium chloride attack? All the fish in the Han River estuary disappeared.](https://pds.joins.com/news/component/htmlphoto_mmdata/202101/30/77797b11-8677-4a4f-b198-454818f0d7a1.jpg "[단독]Calcium chloride attack? All the fish in the Han River estuary disappeared.")