Phayan Tansakul. 2004. Removal of ammonia-nitrogen from a recirculation system using immobilization of nitrifying bacteria into PVA (Polyvinyl alcohol) gel beads. Field of Study Environmental Technology, Mahidol University;
Phayan Tansakul. (2004) Removal of ammonia-nitrogen from a recirculation system using immobilization of nitrifying bacteria into PVA (Polyvinyl alcohol) gel beads . Mahidol University/Bangkok.
Phayan Tansakul. Removal of ammonia-nitrogen from a recirculation system using immobilization of nitrifying bacteria into PVA (Polyvinyl alcohol) gel beads. . Bangkok:Mahidol University, 2004.
Phayan Tansakul. (2004) Removal of ammonia-nitrogen from a recirculation system using immobilization of nitrifying bacteria into PVA (Polyvinyl alcohol) gel beads . Mahidol University/Bangkok.