TY  - GEN
AU  - Hager,L D
TI  - Have you heard
SN  - 0362-4064
PY  - 1999///0413
KW  - Ear Protective Devices
KW  - Head Protective Devices
KW  - Hearing Loss, Noise-Induced
KW  - prevention & control
KW  - Humans
KW  - National Institute for Occupational Safety and Health, U.S
KW  - Occupational Diseases
KW  - United States
KW  - Workplace
N1  - Publication Type: Journal Article
ER  -