著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL United States. Dept. of Agriculture and United States. Bureau of Agricultural Economics,"Sheep, lamb, mutton, and wool statistics : year ended March 31, 1923, with comparable data for earlier years",,Government Printing Office,1924,Statistical bulletin,,,,https://cir.nii.ac.jp/crid/1130282269346423680