TY - RPRT TI - Compatibility of protective coatings, materials, and liquid propellants : quarterly progress report no. 14 - April 1 to June 30, 1969 AU - Young, J P AU - Reid, G I PY - 1969 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS RPT 10069 DO - 10.6028/NBS.RPT.10069 ER -