@book{71714,
	author = {Banco Nacional Agropecuario, S.A. México},
	title = {Muestreo},
	publisher = {El Banco,},
	year = {1967},
	series = {Banco Nacional Agropecuario, S. A. México. Boletín técnico},
	address = {México, D. F. :}
}