| Standard materials, one of the core collections at national Bureau of
Standards(NBS) and some technology and commerce libraries, are important for
industry andscientific research, Serving as a short introduction to standard materials,
this paperprovides various definitions of standard materials and examines collection
processesand ways of material search. It is expected that patrons will be better
informed of the use of standard materials.
Classified under various indexes such as subject, usage, area, and technical
term,standard materials include model materials, technical regulations,
professionaldocuments and specifications, and so on. Catalogues such as BS, DIN,
ANSI and somestandard reference books published by NBS are useful in the
collection process. Thereare several cataloguing methods for standard materials :
subject Classification,chronological Classification, Universal Decimal
Classification, and Key-wordClassification.