TY - BOOK ED - United States. ED - United States. ED - United States. TI - Census of United States civil aircraft U1 - 387.73340973021 PY - 1974///- CY - Washington, D. C. PB - U. S. Dept. of Transportation KW - Aeronautics KW - United States KW - Statistics N1 - Library has Vol. 2 ER -