@article{oai:niigata-u.repo.nii.ac.jp:00030591,
 author = {石沢, 進},
 journal = {新潟県植物保護, 新潟県植物保護},
 month = {Oct},
 pages = {16--16},
 title = {野生ナシの巨樹},
 volume = {32},
 year = {2002}
}