TY  - RPRT
TI  - Specifications and tolerances for reference standards and field standard weights and measures 4. specifications and tolerances for liquefied petroleum gas and anhydrous ammonia liquid volumetric provers 
AU  - Harris, Georgia L
PY  - 1997
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - NIST HB 105-4
DO  - 10.6028/NIST.HB.105-4
ER  -