Pornpet Panjapiyakul. 1992. Predicted model on hearing loss prevalence among long-tall motor boat drivers in Bangkok. Bangkok:Mahidol University;
Pornpet Panjapiyakul. (1992) Predicted model on hearing loss prevalence among long-tall motor boat drivers in Bangkok (รายงานผลงานวิจัย). Mahidol University:Bangkok.
Pornpet Panjapiyakul. Predicted model on hearing loss prevalence among long-tall motor boat drivers in Bangkok. Bangkok:Mahidol University, 1992.
Pornpet Panjapiyakul. (1992) Predicted model on hearing loss prevalence among long-tall motor boat drivers in Bangkok (รายงานผลงานวิจัย). Mahidol University:Bangkok.