@book{2230,
	author = {Alvarez Moreno, Gumercindo.},
	title = {Estudio de viabilidad técnica y financiera del cultivo de sabila (A. vera L.) en la zona centro de Tamaulipas},
	publisher = {El Autor,},
	year = {1987},
	address = {Cd. Victoria, Tamps. :},
	note = {D45-13}
}