@article{oai:u-ryukyu.repo.nii.ac.jp:02006059,
 author = {宮城, 正夫},
 issue = {40},
 journal = {琉大農家便り},
 note = {紀要論文},
 pages = {5--7},
 title = {牛の乳房炎の予防について}
}