2024-03-29T02:23:15Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/132362019-04-25T04:55:30Zhdl_2115_13200hdl_2115_13195hdl_2115_157本學農場ニ於ケル乳牛ノ分娩季節に關スル一考察About the Parturition Seasons of Milking Cow in the University Farm.井口, 賢三三田村, 健太郎神谷, 俊雄610北海道帝國大學農學部附屬農場Departmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/13236https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/13236/1/5_p29-44.pdfAN00267573北海道帝國大學農學部附屬農場特別報告529441934-03-15jpnpublisher