@misc{1166646, author = {R T Vaughan and C A Douglas}, title = {A field evaluation of the relative brightnesses of eight types of runway marking materials:}, year = {1959}, month = {1959-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.RPT.6549}, language = {en}, }