C. A. 3d Cir. Reported below: Nos. 72-394 and 72-414, 461 F. 2d *1106215; No. 72-555, 463 F. 2d 363; No. 72-666, 461 F. 2d 223; and No. 72-528, 463 F. 2d 225. Motion of American Public Health Assn, et al. for leave to file a brief as amici curiae in No. 72-394 granted. Certiorari granted. Cases consolidated and a total of three hours allotted for oral argument.