@book{37418,
	author = {Overdal, Arnold C. and Agencia para el Desarrollo Internacional.},
	title = {Bibliography of soils of the tropics},
	publisher = {Agency for International Development,},
	year = {19 -},
	series = {Technical series bulletin},
	address = {Washington :},
	note = {La biblioteca tiene : v.3 Tropics in general middle America and West Indies.--v.4 Tropics in general islands of Pacific and indian oceans}
}