@misc{1192706, author = {Felix Y Yokel and Richard L Tucker and Lymon Reese}, title = {Soil classification for construction practice in shallow trenching:}, year = {1980}, month = {1980-01-01 05:01:00}, publisher = {Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD}, doi = {https://doi.org/10.6028/NBS.BSS.121}, language = {en}, }