@book{60856,
	author = {E.U.A. Department of Agriculture},
	title = {Agricultural statistics},
	publisher = {United States,},
	year = {19 -19 .},
	address = {Washington :},
	note = {La biblioteca tiene: 1960, 1961, 1962, 1963m 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1975, 1976, 2001, 2002, 2003, 2004, 2005, 2006, 2008}
}