@book{81455,
	author = {Ortíz Plata, Felipe de Jesús.},
	title = {Malezas exóticas para México (Pennisetun pedicellatum Trin., Silybum marianum (L.) Gaerth, Euphorbia esula L.). :},
	publisher = {El autor,},
	year = {1999.},
	address = {Chapingo, Méx. :}
}