@book {Boustan2014,
	title = {Human capital in history : the American record},
	year = {2014},
	publisher = {The University of Chicago Press},
	organization = {The University of Chicago Press},
	address = {Chicago},
	keywords = {Human capital {\textendash} United States., Labor supply {\textendash} United States {\textendash} History.},
	isbn = {9780226163895},
	editor = {Boustan, Leah Platt and Frydman, Carola and Margo, Robert A}
}
