@article{oai:niigata-u.repo.nii.ac.jp:00030822, author = {笹川, 通博}, journal = {新潟県植物保護, 新潟県植物保護}, month = {Jan}, pages = {12--12}, title = {湖沼環境の保護はなぜ必要か}, volume = {3}, year = {1988} }