TY - RPRT TI - Evaluation testing of coating materials for concrete reinforcing bars: interim report no. 3 AU - Clifton, James R AU - Mathey, Robert G PY - 1971 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 10984 DO - 10.6028/NBS.RPT.10984 ER -