@misc{1194251, author = {Felix Y Yokel and Richard L Tucker and Lymon C Reese}, title = {Soil classification for construction practice in shallow trenching:}, year = {1979}, month = {1979-01-01 05:01:00}, publisher = {, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.IR.79-1945}, language = {en}, }