Perera, P. A.
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 - Kealniya University of Kelaniya 2014 - vii, 63 p. 30 cm.
Research Project
Student Research Reports
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 - Kealniya University of Kelaniya 2014 - vii, 63 p. 30 cm.
Research Project
Student Research Reports