Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WATANABE Yoshito and SAKURAI Yoshio,The present state of water quality and the conservation of some alpine lakes in Nagano prefecture,Japanese Journal of Water Treatment Biology,0910-6758,Japanese Society of Water Treatment Biology,1980,16,1-2,47-64,https://cir.nii.ac.jp/crid/1390282679938177536,https://doi.org/10.2521/jswtb.16.47