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		Korean Journal of Environment and Ecology :: Vol.33 No.2 pp.131-167 DOI:https://doi.org/10.13047/KJEE.2019.33.2.131 Open abstract    
Korean Journal of Environment and Ecology :: Vol.33 No.2 pp.131-167
			DOI:https://doi.org/10.13047/KJEE.2019.33.2.131
			 
			