“Modern Living: Think Metric”. Time Magazine. (9 June 1975). オリジナルの22 January 2011時点におけるアーカイブ。. https://web.archive.org/web/20110122055540/http://www.time.com/time/magazine/article/0,9171,913145,00.html15 June 2010閲覧. "Meanwhile, the metricization of America is already taking place. Individual federal agencies, school systems, states and industries, as well as radio announcers, supermarkets, beverage bottlers and ballpark scoreboards, are hastening the everyday use of meters, liters and grams. ...a road sign outside Fergus Falls reads, ST. CLOUD 100 MILES OR 161 KILOMETERS. Other signs note that 55 m.p.h. equals 88 kilometers per hour."
“Modern Living: Think Metric”. Time Magazine. (9 June 1975). オリジナルの22 January 2011時点におけるアーカイブ。. https://web.archive.org/web/20110122055540/http://www.time.com/time/magazine/article/0,9171,913145,00.html15 June 2010閲覧. "Meanwhile, the metricization of America is already taking place. Individual federal agencies, school systems, states and industries, as well as radio announcers, supermarkets, beverage bottlers and ballpark scoreboards, are hastening the everyday use of meters, liters and grams. ...a road sign outside Fergus Falls reads, ST. CLOUD 100 MILES OR 161 KILOMETERS. Other signs note that 55 m.p.h. equals 88 kilometers per hour."
