@book{93393,
	author = {Musálem Santiago, Miguel Angel. and Ramírez Luis, Alvaro.},
	title = {Monografía de Pinus ayacahuite var. veitchii Shaw :},
	publisher = {INIFAP. Campo Experimental del Valle de México,},
	year = {2003.},
	series = {Libro técnico},
	address = {Chapingo, Méx. :}
}