TY  - RPRT
TI  - A system for calibration of the Marshall compaction hammer 
AU  - Spellerberg, Peter A
AU  - Savage, David A
PY  - 1994
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST IR 5338
DO  - 10.6028/NIST.IR.5338
ER  -