Author,Title,Edition,Publisher,Year,Series,Number,ISBN,ISSN,URL
United States. Bureau of Labor Statistics,"Occupational mobility of scientists : a study of chemists, biologists and physicists with Ph.D. degrees",,"U.S. Dept. of Labor, Bureau of Labor Statistics,For sale by the Supt. of Docs., U.S. Govt. Print. Off.",1953,Bulletin,,,,https://cir.nii.ac.jp/crid/1130282272150799488