TY - RPRT TI - Skid resistance measurement tests of new FHWA reference systems at the eastern Field Test Center AU - Kearns, R W AU - Ward, J F PY - 1977 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 77-1213 DO - 10.6028/NBS.IR.77-1213 ER -