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		Korean Journal of Environment and Ecology :: Vol.34 No.6 pp.601-609 DOI:https://doi.org/10.13047/KJEE.2020.34.6.601 Open abstract    
Korean Journal of Environment and Ecology :: Vol.34 No.6 pp.601-609
			DOI:https://doi.org/10.13047/KJEE.2020.34.6.601
			 
			