@book{18939,
	author = {Edgeworth, Maria, and Edgeworth, Richard Lovell,},
	title = {Practical education,},
	publisher = {Harper & brothers,},
	year = {1835.},
	address = {New-York,},
	note = {New edition.},
	url = {http://hdl.loc.gov/loc.gdc/scd0001.0020407608A}
}