Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KATO Susumu and SATO Kunihiko and TAKAHASHI Masaaki and SHIMONO Masayuki,STUDY ON COD-ESTIMATION IN RIVER AND WASTE WATER BY PORTABLE ULTRAVIOLET ABSORBANCE PHOTOMETR,Journal of Environmental Conservation Engineering,0388-9459,Society of Environmental Conservation Engineering,2003,32,7,575-581,https://cir.nii.ac.jp/crid/1390282679567230848,https://doi.org/10.5956/jriet.32.575