TY - RPRT TI - VOR aircraft navigation system measurements : final report, task 1 AU - Arthur, M G AU - Halford, Donald AU - Manney, C H PY - 1973 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 73-340 DO - 10.6028/NBS.IR.73-340 ER -