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. Crop Reporting Board,"Prices received by farmers : apples, 1934-56, pears, 1919-56 : monthly and season average prices, value",,"U.S. Dept. of Agriculture, Agricultural Marketing Service, Crop Reporting Board",1959,Statistical bulletin,,,,https://cir.nii.ac.jp/crid/1130282268856543616