TY  - GEN
AU  - Eitzen, D G
AU  - Sushinsky, G F
AU  - Chwirut, D J
AU  - Bechtoldt, C J
AU  - Ruff, A W
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1975-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.IR.75-685
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1975
TI  - Improved ultrasonic standard reference blocks:
ER  -