TY - RPRT TI - Underground pipe insulation : progress report August 1, 1954 to May 31, 1955 AU - Cole, Selden D AU - Achenbach, Paul R PY - 1955 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 4125 DO - 10.6028/NBS.RPT.4125 ER -