@book{88236,
	author = {Harris, Dale B. and University of Minnesota.},
	title = {The concept of development},
	publisher = {University of Minnesota Press},
	year = {[1957]},
	address = {Minneapolis},
	note = {Papers presented at a conference held at the University of Minnesota, Dec. 8-10, 1955, to recognize the Institute of Child Welfare's productive work of three decades.}
}