2024-03-29T04:44:52Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/316092019-05-17T07:06:34Zhdl_2115_30894hdl_2115_4917hdl_2115_123操作技術の所有権と経済厚生Property Right of Operational Technique and Economic Welfare小林, 好宏330北海道大学經濟學部Departmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/31609https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/31609/1/33%281%29_P38-49.pdf0451-6265AN00070036經濟學研究33138491983-06jpnpublisher