TY  - RPRT
TI  - Letter Circular 486: metals do not crystallize under vibration (replaces Letter Circular 204)
PY  - 1937
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 486
DO  - 10.6028/NBS.LCIRC.486
ER  -