TY  - RPRT
TI  - Letter Circular 636: publications on acoustics by members of the staff of the National Bureau of Standards (supersedes Letter Circular 380)
PY  - 1941
PB  - National Institute of Standards and Technology
CY  - Gaithersburg, MD
SN  - LCIRC 636
DO  - 10.6028/NBS.LCIRC.636
ER  -