Lawan Boonyamanond. 1999. Effects of cigarette smoking on severity of periodontal disease among male taxi motor-cyclists in Thung Kru district, Bangkok. Faculty of Graduate Studies, Mahidol University;
Lawan Boonyamanond. (1999) Effects of cigarette smoking on severity of periodontal disease among male taxi motor-cyclists in Thung Kru district, Bangkok . Mahidol University/Bangkok.
Lawan Boonyamanond. Effects of cigarette smoking on severity of periodontal disease among male taxi motor-cyclists in Thung Kru district, Bangkok. . Bangkok:Mahidol University, 1999.
Lawan Boonyamanond. (1999) Effects of cigarette smoking on severity of periodontal disease among male taxi motor-cyclists in Thung Kru district, Bangkok . Mahidol University/Bangkok.