Historical
IEC 60721-2-1 Amd.1 Ed. 1.0 b:1987
Amendment No. 1
Appendix A:Geographical survey of statistical open-air climates. Appendix B:Constitutional diagram for humid air.
International Electrotechnical Commission [iec]
Appendix A:Geographical survey of statistical open-air climates. Appendix B:Constitutional diagram for humid air.