Noppadol Sangkanauk. 2002. The criminal investigation of narcotics drugs in the Metropolitan Police Subdivision 7. Field of Study Criminology and Criminal Justice, Mahidol University;
Noppadol Sangkanauk. (2002) The criminal investigation of narcotics drugs in the Metropolitan Police Subdivision 7 . Mahidol University/Bangkok.
Noppadol Sangkanauk. The criminal investigation of narcotics drugs in the Metropolitan Police Subdivision 7. . Bangkok:Mahidol University, 2002.
Noppadol Sangkanauk. (2002) The criminal investigation of narcotics drugs in the Metropolitan Police Subdivision 7 . Mahidol University/Bangkok.