@misc{1154541, author = {Jack J Hsia}, title = {Optical radiation measurements ::the NBS 20-, 60-, and 85- degree specular gloss scales}, year = {1975}, month = {1975-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.TN.594-10}, language = {en}, }