@book{80639,
	author = {Huerta Vázquez, José Luis.},
	title = {Estudio de conos y semillas de Pinus ayacahuite variedad veitchii Shaw, en dos localidades de la sierra nevada de México},
	publisher = {El autor,},
	year = {2000.},
	address = {Chapingo, Méx. :}
}