@misc{1152511, author = {Robert J Brungraber}, title = {A new portable tester for the evaluation of the slip-resistance of walkway surfaces:}, year = {1977}, month = {1977-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.TN.953}, language = {en}, }