@book{oai:chikyu.repo.nii.ac.jp:00002933,
 author = {鄭, 躍軍 and ZHENG, Yuejun},
 month = {Mar},
 note = {application/pdf},
 publisher = {RIHN IDEA Project},
 title = {Theoretical Analysis on People's Environmental Concerns in the Watershed},
 year = {2006}
}