Danthanarayana, N. D.
Awareness on excessive noise exposure , hearing protection and situations, perceived systems of noise exposure among grade 12 students of a selected government school in Colombo district. - Kelaniya University of Kelaniya 2014 - vii, 62 p. 30 cm.
Research Project
Student Research Reports
Awareness on excessive noise exposure , hearing protection and situations, perceived systems of noise exposure among grade 12 students of a selected government school in Colombo district. - Kelaniya University of Kelaniya 2014 - vii, 62 p. 30 cm.
Research Project
Student Research Reports