
    No. 220.
    Air Line Dispatchers Association, A. F. of L. et al. v. National Mediation Board et al.
    
      B. F. Napheys, Jr. for petitioners.
    
      Solicitor General Perlman, Assistant Attorney General Morison and J. Roger Wollenberg for respondents.
   United States Court of Appeals for the District of Columbia Circuit. ' Certiorari denied.  