Nos. 17275, 17468. Argued April 29, 1963. Decided July 3, 1963. Petitions for Rehearing Before the Division Denied September 27, 1963. Petition for Rehearing En Banc Denied September 27, 1963. Mr. Jerry D. Anker, Washington, D.C., with whom Messrs. David E. Feller, Elliot Bredhoff, and Michael H. Gottesman, Washington, D.C., were on the brief, for petitioners in No. 17275 and intervenors in No. 17468. Mr. Marion B. Plant, San Francisco, Cal., with whom Mr. Gerard D. Reilly, Washington, D.C., was