1929-2005 1946- 1966- 1968- 20thcentury 863 braschi cabrerainfante caribbeanfiction(spanish) edgardo giannina groupidentityinliterature historyandcriticism inliterature luisrafael mayra nationalcharacteristics pedroantonio popularmusicinliterature puertorican puertoricanfiction rodríguezjuliá sánchez valdez