TY  - BOOK
AU  - Kovacs,William D.
AU  - Salomone,Lawrence A.
AU  - Yokel,Felix Y.
ED  - United States.
TI  - Energy measurement in the standard penetration test
U1  - 631.4 
PY  - 1981///
CY  - Washington, D.C
PB  - United States Government Printing Office
KW  - News digest
ER  -