_:Bf2ffd981c800400f55c574b8bbde1c4c . "Stephen M." . "Gersten" . "1940"^^ . "Stephen M. Gersten" . . . "Gersten, Stephen M. (1940-)" . . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c "2023-05-19"^^ . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c "072841893" . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c . _:Bf2ffd981c800400f55c574b8bbde1c4c .