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The Unique Reference Number (URN) is a six-digit number used by the UK government to identify educational establishments in the United Kingdom. The URN...

A reference is a relationship between objects in which one object designates, or acts as a means by which to connect to or link to, another object. The...

A CAS Registry Number (also referred to as CAS RN or informally CAS Number) is a unique identification number, assigned by the Chemical Abstracts Service...

An Employer Reference Number Number (ERN Number) or Employer PAYE Reference is a unique reference number issued in the United Kingdom by HMRC to an employer...

The Unique Property Reference Number (UPRN) is a unique number (a geocode) for every addressable location—e.g., a building, a bus stop, a post box, a feature...

A Meter Point Administration Number, also known as MPAN, Supply Number or S-Number, is a 21-digit reference used in Great Britain to uniquely identify...

The Unique Street Reference Number (USRN) is an eight-digit unique identifier (a geocode) for every street across Great Britain.  The USRNs for England...

315-1975 define how to reference and annotate components of electronic devices. It breaks down a system into units, and then any number of sub-assemblies....

Look up cross-reference in Wiktionary, the free dictionary. The term cross-reference (abbreviation: xref) can refer to either: An instance within a document...

In medicine and health-related fields, a reference range or reference interval is the range or the interval of values that is deemed normal for a physiological...

company writes the Creditor Reference instead of the invoice number in the message section, or places a Creditor Reference field in its payment ledger...

Insurance number must be obtained – the temporary code must not now be used. Another type of temporary NI number is the Revenue-issued Temporary Reference Number...

Vancouver reference style or the author–number system, is a citation style that uses numbers within the text that refer to numbered entries in the reference list...

In computer science, reference counting is a programming technique of storing the number of references, pointers, or handles to a resource, such as an...

The reference of a sentence is its truth value, whereas its sense is the thought that it expresses. Frege justified the distinction in a number of ways...

and each of these four numbering structures are constructed in a similar fashion, combining Company Prefix, Item Reference and a calculated Check Digit...

Digital reference (more commonly called virtual reference) is a service by which a library reference service is conducted online, and the reference transaction...

have a signed touring route number, or are former touring routes that are still state-maintained. The majority of reference routes are owned by the state...

number of individual donors, reference genomes do not accurately represent the set of genes of any single individual organism. Instead, a reference provides...

A spatial reference system (SRS) or coordinate reference system (CRS) is a framework used to precisely measure locations on the surface of Earth as coordinates...