@book{20500,
	author = {Coker, William Chambers, and Hoffman, Eleanor, and University of North Carolina (1793-1962).},
	title = {Design and improvement of school grounds,},
	publisher = {The University of North Carolina,},
	year = {1921.},
	series = {[University of North Carolina (Chapel Hill campus). Bureau of Extension] Bureau of Extension bulletin. Special series},
	address = {Chapel Hill, N.C.,},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.00302180295}
}