@book{221995,
	author = {García del Amo, Dolores and Calvo Pérez, Benjamín},
	title = {Recursos de la tierra : origen, uso e impacto ambiental / James R. Craig ; David J. Vaughan ; Brian J. Skinner ... [et al.]},
	publisher = {Pearson Educación},
	year = {2007},
	address = {Madrid},
	edition = {3a ed.}
}