Perera, U., Perera, S., Perera, M., & Jayakody, S. (2019). ATTITUDES AND PRACTICES OF SMOKING AMONG MALE STUDENTS OF ADVANCED LEVEL BIOLOGY STREAM TUITION CLASSES IN AN URBAN DISTRICT IN SRI LANKA. Proceedings of the Global Public Health Conference, 2(1), 18–24. https://doi.org/10.17501/26138417.2019.2103