@book{63589,
	author = {Hanson, Clarence H. and American Society of Agronomy. Madison, Wis.},
	title = {Ciencia y tecnología de alfalfa},
	publisher = {Hemisferio Sur,},
	year = {[1980?]},
	series = {Texto de agronomía y veterinaria},
	address = {Montevideo :}
}