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
"Graves, R. R. and United States. Dept. of Agriculture","Feeding value for milk production of pasture grasses when grazed, when fed green and when fed as hay or silage",,U.S. Dept. of Agriculture,1933,Technical bulletin,,,,https://cir.nii.ac.jp/crid/1130282272850778624