@book{18501,
	author = {Hicks, James Allan, and Marston, Leslie Ray, and National Research Council (U.S.).},
	title = {Directory of research in child development.},
	publisher = {National Research Council,},
	year = {1931.},
	series = {Reprint and circular series of the National Research Council.},
	address = {Washington, D.C.,},
	edition = {2d ed.},
	note = {Cover-title.}
}