Cross References:IEC 60050IEC 60068-1EN 60068-1IEC 61672-1EN 61672-1IEC 61988-1EN 61988-1IEC 61988-2-1EN 61988-2-1IEC 61988-4EN 61988-4ISO 7574-1EN 27574-1IEC 61988-3-1All current amendments available at time of purchase are included with the purchase of this document.