@book{88236,
	author = {Cruz Contreras, José Luis. and Vélez Torres, Marcelina.},
	title = {Propagación de rosa, gerbera, aster y control de araña roja y cenicilla en rosa},
	publisher = {El autor,},
	year = {2003},
	address = {Chapingo, Méx. :},
	url = {http://10.13.5.2/tesis/99759.pdf}
}