@book{36126,
	author = {Best, Ethel L.},
	title = {A study of a change from one shift of 9 hours to two shifts of 6 hours each,},
	publisher = {U.S. Govt. print. off.,},
	year = {1934.},
	address = {Washington,},
	note = {At head of title: U.S. Department of labor. Fransis Perkins, secretary. Woman's bureau. Mary Anderson, director.}
}