adventurestories(children's anthologies children children'sfiction classics diosesgriegos fables fairytales ficciónjuvenil fiction folklore gods godsandgoddesses greek greekgods greekmythology juvenilefiction kids legends materialesenespañol mitologíagriega myths newyorktimesbestseller percyjackson(fictionalcharacter) percyjackson(fictitiouscharacter) roman spanishlanguagematerials teenage) teens traditionalstories(children's youngadultfiction