2024-03-28T13:09:49Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/378442019-03-18T09:34:53Zhdl_2115_37352hdl_2115_37318hdl_2115_139A Study on the Structure of Pyridine Extracts from Coals by High Resolution Nuclear Magnetic Resonance SpectroscopyTakeya, GenItoh, MitsuomiSuzuki, AkiraYokoyama, Susumu500Hokkaido UniversityDepartmental Bulletin Paperapplication/pdfhttp://hdl.handle.net/2115/37844https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/37844/1/11%286%29_613-628.pdf0368-9379AA00732467Memoirs of the Faculty of Engineering, Hokkaido University1166136281965-08engpublisher