TY - GEN AU - Devapaksha, D. P. A. E. AU - Illeperuma, D. TI - Subjective evaluation of perceived sources of noise annoyance and associated ailments of teachers in selected Sinhala medium primary schools in the Attanagalla educational division PY - 2014/// CY - Kelaniya PB - University of Kelaniya KW - Student Research Reports N1 - Research Project ER -