University manual of occupational safety and health/

Geahča maid

• Occupational safety and health for working population
  Dahkki: National Conference on Occupational Safety and Health for Working Population (1998 : Kuala Lumpur)
  Almmustuhtton: (1998)
• Occupational safety and hygiene /
  Dahkki: International Symposium on Occupational Safety and Hygiene (2013 : Guimars̊, Portugal), et al.
  Almmustuhtton: (2013)
• Proceedings of the Conference on Occupational and Safety Health, 25 - 26 June 2002, PWTC, Kuala Lumpur
  Dahkki: Conference on Occupational and Safety Health (2002 : PWTC, Kuala Lumpur)
  Almmustuhtton: (2002)
• Occupational safety and hygiene II /
  Dahkki: International Symposium on Occupational Safety and Hygiene (2014 : Guimares, Portugal), et al.
  Almmustuhtton: (2014)
• Proceedings of the Seminar on Occupational Safety and Health in Malaysia : issues and challenges, 21-22 Jan. 2003, Universiti Sains Malaysia, Pulau Pinang /
  Dahkki: Seminar on Occupational Safety and Health in Malaysia (2003 : USM, Pulau Pinang)
  Almmustuhtton: (2003)