Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Hirai Kazumitsu,A Study on the Real State of Serum Cholinestrase Activity Levels in Citrut Fruit Area,JOURNAL OF THE JAPANESE ASSOCIATION OF RURAL MEDICINE,04682513,THE JAPANESE ASSOCIATION OF RURAL MEDICINE,1976,25,1,1-10,https://cir.nii.ac.jp/crid/1390282679888951808,https://doi.org/10.2185/jjrm.25.1