_:vb51021620 . _:vb51021619 "64.0"^^ . _:vb51021619 . "Integrated Management of Natural Resources (2)" . . . _:vb51021620 . _:vb51021620 "160000.0"^^ . . _:vb51021620 . _:vb51021619 . _:vb51021619 .