TY - BOOK ED - National Planning Association (Washington) TI - National policy for aviation: aircraft production- air forces- air commerce U1 - 629.1 21st PY - 1946/// CY - Washington PB - NPA KW - National policy; Aircraft industry; Transpotation; Aeronantics N1 - Statement by the NPA Board of Trustees and a report by the NPA Adbisory committee on the aircraft industry ER -