Standards of Products

IEEE/IEE Electronic Library (IEL) -- Full text current IEEE standards.

Document Center -- Document Delivery service ( for fee ) specializing in government and industry specifications and standards.

ISO Catalogue -- International Organization for Standardization

NIST -- The US National Institute for Standards and Technology

CIE -- The International Commission on Illumination, Wien

IEC -- The International Electrotechnical Commission (IEC), Geneva