TY - RPRT TI - Protective coatings for steel structures : part 1 - Survey of Air Force coating problems and development of an interim guide specification AU - Campbell, P G AU - Sleater, G A PY - 1979 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS IR 79-1773 DO - 10.6028/NBS.IR.79-1773 ER -