@article{oai:rakuno.repo.nii.ac.jp:00004418,
 author = {OKAMOTO, Masahiro and ISHIHARA, Mie and IZUMI, Kenichi and 泉, 賢一},
 issue = {1},
 journal = {酪農学園大学紀要. 自然科学編},
 month = {Oct},
 note = {Bulletin},
 pages = {45--49},
 title = {Concentrations of Ammonia, Urea and Nitrate Nitrogen in Urine of Dairy Cattle in the University Herd},
 volume = {26},
 year = {2001}
}