. . _:vb51021998 . . _:vb51021999 . _:vb51021999 . _:vb51021998 . _:vb51021999 . _:vb51021998 "18.32"^^ . _:vb51021998 . "Operational Processes in Food Service (practical course1)" . _:vb51021999 "46000.0"^^ .