TY  - GEN
AU  - Perera, P. A. 
AU  - Fonseka, R. 
TI  - The proportion of noise-induced hearing loss (NIHL) and the use of personal hearing protection devices(PHPDs) among liquefied petroleum gas (LPG) cylinder infusion factory workers in Biyagama zone, Sri Lanka
PY  - 2014///
CY  - Kealniya
PB  - University of Kelaniya
KW  - Student Research Reports
N1  - Research Project
ER  -