C. A. 8th Cir. Motion of National Association of Regulatory Utility Commissioners et al. for leave to file a brief as amici curiae granted. Certiorari granted, judgment vacated, and casé remanded for further consideration in light of Public Service Comm'n v. Chesapeake & Potomac Tel. Co., ante, p. 445.
Justice Powell and Justice O'Connor took no part in the consideration or decision of this motion and this case.