TY - RPRT TI - Interim report no. 7. chemical resistance and physical durability testing of coating materials : nonmetallic coatings for concrete reinforcing bars AU - Clifton, James R AU - Beeghly, Hugh F AU - Mathey, Robert G PY - 1973 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 73-295 DO - 10.6028/NBS.IR.73-295 ER -