TY - RPRT TI - Non-metallic antenna-support materials AU - Marlowe, Donald E AU - Halsey, Nixon AU - Mitchell, Richard A AU - Mordfin, Leonard PY - 1973 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 73-233 DO - 10.6028/NBS.IR.73-233 ER -