. _:B335f722ac836d1b182d15e6049a4d1cf . "Jens Ludwig" . "Ludwig, Jens (1997 fl.)" . "Jens" . . . . "Ludwig" . "Georgetown University Public Policy Institute (2007)"@nl . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf "2023-05-21"^^ . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf "184911362" . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf . _:B335f722ac836d1b182d15e6049a4d1cf .