TY - RPRT TI - Comparison of xenon and carbon arcs as radiation sources for laboratory weathering of asphalts AU - Martin, Keith G AU - Campbell, Paul G AU - Wright, James R PY - 1964 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS report ; 8511 DO - 10.6028/NBS.RPT.8511 ER -