2024-03-29T07:00:54Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/559872019-03-18T10:23:55Zhdl_2115_55867hdl_2115_45005hdl_2115_116A NOTE ON COVERING SPACES1)Kurata, Y.Kato, M.410北海道大学Departmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/55987https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/55987/1/JFSHIU_13_N2_065-067.pdf2189-3187Journal of the Faculty of Science Hokkaido University. Ser. 1 Mathematics1320650671956engpublisher