TY - RPRT TI - Letter Circular 1036: standard light-sensitive paper for use in testing textiles for colorfastness to light PY - 1963 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - LCIRC 1036r1963 DO - 10.6028/NBS.LCIRC.1036r1963 ER -