@book{4127,
	author = {Fothergill, Richard and Butchart, Ian},
	title = {Materiales no librarios en las bibliotecas : guía práctica},
	publisher = {Fundación Germán Sánchez Ruipérez, },
	year = {1992.},
	address = {Madrid : },
	edition = {3a ed.}
}