TY  - RPRT
TI  - Comparison of energy measurements in the standard penetration test using the cathead and rope method : phases I and II : final report
AU  - Kovacs, W D
AU  - Salmone, L A
AU  - Yokel, F Y
PY  - 1983
PB  - National Bureau of Standards
CY  - Gaithersburg, MD
SN  - NBS IR 83-2760
DO  - 10.6028/NBS.IR.83-2760
ER  -