Information and documentation. Performance indicators for national libraries Ingestion-build-223009 At present testing is not

At present testing is not defined for frequencies below 150 kHz (except for traction fundamental frequencies) and above 1 GHz because of difficulties in specifying appropriate test methods

or blindness

flattening test

Guidance on World Wide Web user interfaces

PD IEC TR 63139 on mathematical addition of working voltages

Information and documentation. Performance indicators for national libraries Ingestion-build-223009 At present testing is not1 Scope This Technical Report establishes the performanceindicators for national libraries. It is also applicable to libraries with regional tasks and without a defined population to be served, as many of their evaluation problems correspond to those of national libraries. The performanceindicators are of special interest for comparison over time within the same library. Comparisons between libraries are possible, if differences in the tasks and