Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NOGAMI Michio,Precision of astronomical observation and aspect measurement in the Former Han Era,Proceedings of the General Meeting of the Association of Japanese Geographers,,The Association of Japanese Geographers,2016,2016a,0,100011,https://cir.nii.ac.jp/crid/1390282680672859264,https://doi.org/10.14866/ajg.2016a.0_100011