@article{oai:obihiro.repo.nii.ac.jp:00001069,
 author = {Ishi, Mitsuo and 石井, 三都夫},
 issue = {3},
 journal = {家畜診療, Journal of Livestock Medicine},
 month = {},
 note = {application/pdf},
 pages = {139--147},
 title = {乳牛の難産 : 原因,予防,助産および失位整復法},
 volume = {61},
 year = {2014}
}