1. American Conference of Governmental Industrial Hygienists (ACGIH), Committee on Threshold Limits (1972): “TLV's Threshold Limit Values for Chemical Substances and Physical Agents in the Workroom Environment With Intended Changes for 1972.” ACGIH, Cincinnati.
2. American Conference of Governmental Industrial Hygienists (ACGIH), Committee on Threshold Limits (1975): “TLV's (TM), Threshold Limit Values for Chemical Substances and Physical Agents in the Workroom Environment With Intended Changes for 1975.” ACGIH, Cincinnati.
3. American Conference of Governmental Industrial Hygienists (ACGIH) (1986): TLV'sR Threshold Limit Values for Chemical Substances and Physical Agents in the Work Environment and Biological Exposure Indices with Intended Changes for 1986–1987. ACGIH, Cincinnati.