関連ワード:
what was the first child labor law passed what year was the first child labor law passed what was the first child labor law that was introduced in 1906 by senator albert beveridge say when was the first child labor law passed by congress when was the first child labor laws passed what president passed the first child labor law when was the first national child labor law passed what was the first state to pass child labor laws what year was the child labor law passed who passed the child labor law
