TY - RPRT TI - Propagation aspects of TACAN system coverage : for a NDB symposium on TACAN at Washington, D.C. November 3-4, 1955 AU - Decker, Martin T PY - 1955 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 3556 DO - 10.6028/NBS.RPT.3556 ER -