@book{36313,
	author = {Hall, Frances Adkins.},
	title = {Statistical measurement in group work;},
	publisher = {U.S. Govt. print. off.,},
	year = {1939.},
	address = {Washington,},
	note = {At head of title: United States Department of labor.  Frances Perkins, secretary.  Children's bureau.  Katharine F. Lenroot, chief.}
}