TY - GEN AU - Yokel, Felix Y C2 - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD DA - 1980-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.BSS.127 LA - en PB - Building Science Series, National Institute of Standards and Technology, Gaithersburg, MD PY - 1980 TI - Recommended technical provisions for construction practice in shoring and sloping of trenches and excavations: ER -