@misc{1146356, author = {James R Clifton and James M Pommersheim and Kenneth Snyder}, title = {Long-term performance of engineered concrete barriers:}, year = {1995}, month = {1995-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NIST.IR.5690}, language = {en}, }