Show Air Firms On U. U S. S Control WASHINGTON May 18 UP JP UP- UP Eighteen air lines replying to a questionnaire on postwar International international international aviation expressed opposition opposition tion Tuesday to any form of government government government gov gov- participation in their management or ownership The questions were posed by the civil aeronautics board The report was signed by these air lines American All-American Aviation A AmeriCa American Ameri Amen Ca can cai American Export Airways Chicago Southern Souther Colonial Colonial Co Coo lonial Continental Delta Eastern Inland National Northeast Northwest Pennsyl Pennsyl- Central vania-Central Transcontinental Western Vestern United and Western |