TY  - RPRT
TI  - Hearing protector performance--an update.
AU  - P L Michael
AU  - G R Bienvenue
PY  - 1980
DO  - 10.1080/15298668091425248
UR  - https://pubmed.ncbi.nlm.nih.gov/7405821/
ID  - 7405821
ER  -