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		Korean Journal of Environment and Ecology :: Vol.33 No.2 pp.237-251 DOI:https://doi.org/10.13047/KJEE.2019.33.2.237 Open abstract    
Korean Journal of Environment and Ecology :: Vol.33 No.2 pp.237-251
			DOI:https://doi.org/10.13047/KJEE.2019.33.2.237
			 
			