TY - GEN AU - Kovacs, William D AU - Salomone, Lawrence A C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1984-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.IR.84-2910 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1984 TI - Field evaluation of SPT energy, equipment, and methods in Japan compared with the SPT in the United States: ER -