Progress and uniformity in child-labor legislation; a study in statistical measurement, by William F. Ogburn. (Columbia University. Studies in history, economics and public law, v. 48, no. 2)
Progress and uniformity in child-labor legislation; a study in statistical measurement, by William F. Ogburn.
(Columbia University. Studies in history, economics and public law, v. 48, no. 2)
"A description of the child-labor laws of the United States during the past third of a century."Published also as thesis (Ph. D.) Columbia University,...