
    No. 470.
    International Brotherhood of Teamsters, Chauffeurs, Warehousemen & Helpers of America et al. v. National Mediation Board et al.
    
      Herbert S. Thatcher and David Previant for petitioners.
    
      Solicitor General Marshall for National Mediation Board et al., and Edward J. Hickey, Jr., and James L. Highsaw, Jr., for Brotherhood of Railway & Steamship Clerks, respondents.
   C. A. D. C. Cir. Certiorari denied.  