C. A. D. C. Cir. [Certi-orari granted, 406 U. S. 956.] Motion of American Public Power Assn, for leave to file a brief as amicus curiae granted.
C. A. D. C. Cir. [Certi-orari granted, 406 U. S. 956.] Motion of American Public Power Assn, for leave to file a brief as amicus curiae granted.