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International Certificate in Occupational Hygiene
- Foundation OHTA201 – Basic Principles of Occupational Hygiene
- Intermediate OHTA501 – Measurements of Hazardous Substances
- Intermediate OHTA502 – Thermal Environments
- Intermediate OHTA503 – Noise Measurements and its Effects
- Intermediate OHTA504 – Asbestos and other Fibers
- Intermediate OHTA505 – Control of Hazardous Substances
- Intermediate OHTA506 – Ergonomics Essentials
- Intermediate OHTA507 – Health Effects of Hazardous Substances