IEC 60893-1:1987 Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes. Part 1 : Definitions, designations and general requirements
2004IEC 60893-1:2004 Insulating materials - Industrial rigid laminated sheets based on thermosetting resins for electrical purposes - Part 1: Definitions, designations and general requirements
1987IEC 60893-1:1987 Specification for industrial rigid laminated sheets based on thermosetting resins for electrical purposes. Part 1 : Definitions, designations and general requirements