@techreport{oai:meiji.repo.nii.ac.jp:00017482,
 author = {木村, 俊介},
 month = {Apr},
 note = {Research Paper, A．Although the curve of Japan’s declining water supplied population has a little more gentle gradient than that of the decline in the overall population，it shows a tendency to keep declining．This decline has pushed down income from water charges，having a profound impact on the waterworks business．},
 title = {The possibility of wide-area cooperation -A study of unified wide-area waterworks management-},
 year = {2023}
}