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2Sangsudo tʻonggye = Statistics of water works상수도통계 = Statistics of water works상수도통계 = Statistics of water works상수도통계 = Statistics of water works
Journal -
3Hwanʼgyŏng tʻonggye yŏnʼgam = Environmental statistics yearbook환경통계연감 = Environmental statistics yearbook환경통계연감 = Environmental statistics yearbook환경통계연감 Environmental statistics yearbook환경 통계 연감 = Environmental statistics yearbook환경통계연감 = Environmental statistics yearbookPublished 1995
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