@book{98846,
	author = {San Juan Martínez, Erwin.},
	title = {Movilidad de Pb y Ni en suelos contaminados del Valle del Mezquital Hidalgo},
	publisher = {El autor,},
	year = {2010},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/110504.pdf}
}