A Minneapolis ordinance requiring that sexually explicit material considered harmful to minors be displayed in sealed wrappers or under opaque covers was upheld by a federal appellate court in St. Paul. "We believe that the ordinance . . . is one that is 'carefully limited,' and that does not unduly burden the First Amendment rights of adults," wrote Judge Pasco M. Bowman in the 2-1 ruling of the U.S. 8th Circuit Court of Appeals.