TY  - GEN
AU  - PR Heyl
C2  - , National Institute of Standards and Technology, Gaithersburg, MD
DA  - 1926-01-01 05:01:00
DO  - https://doi.org/10.6028/NBS.LCIRC.205
LA  - en
PB  - , National Institute of Standards and Technology, Gaithersburg, MD
PY  - 1926
TI  - Letter Circular 205::sound proof partitions
ER  -