MAP20090090477 Keller, Carmen Effect of risk ladder format on risk perception in high and low numerate individuals / Carmen Keller, Michael siegrist, vivianne Visschers En: Risk analysis : an international journal. - McLean, Virginia : Society for Risk Analysis, 1987-2015 = ISSN 0272-4332. - 01/12/2009 Tomo 29 Número 9 - 2009