Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) MIYAHARA Kaoru and AOKI Masaharu and SAKAI Nagao,Occurrence and Background of Introduced Morningglory (Ipomoea spp.) in Soybean Fields with Narrow-Row-Density and Non-Ridging Planting Cultures,The Hokuriku Crop Science,03888061,Society for Crop Science and Plant Breeding of Hokuriku,2011,46,0,69-72,https://cir.nii.ac.jp/crid/1390282679678428288,https://doi.org/10.19016/hokurikucs.46.0_69