C. A. 8th Cir. Motions of Sears, Roebuck & Co. for leave to intervene in Nos. 71-609 and 71-925 denied. Certiorari denied. Mr. Justice Powell took no part in the consideration or decision of these motions and petitions. Reported below: No. 71-609, 444 F. 2d 699; No. 71-924, 450 F. 2d 353.