@inbook {12520,
	title = {The Evolution of the American Labor Market, 1948-80},
	booktitle = {The American Economy in Transition},
	year = {1980},
	pages = {Chapter 5: Part 1},
	publisher = {University of Chicago Press for NBER},
	organization = {University of Chicago Press for NBER},
	address = {Chicago},
	url = {https://www.nber.org/books-and-chapters/american-economy-transition/evolution-american-labor-market-1948-80},
	author = {Richard Freeman}
}
