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		Korean Journal of Environment and Ecology :: Vol.35 No.3 pp.265-276 DOI:https://doi.org/10.13047/KJEE.2021.35.3.265 Open abstract    
Korean Journal of Environment and Ecology :: Vol.35 No.3 pp.265-276
			DOI:https://doi.org/10.13047/KJEE.2021.35.3.265
			 
			