A 'national library' is a
library specifically established by the
government of a country to serve as the preeminent repository of information for that country. Unlike
public libraries, these rarely allow citizens to borrow books. Often, they include numerous rare, valuable, or significant works.
While the Library of Congress shares many of the functions of a national library, it is not, in fact, the national library of the United States. At this point in time the United States does not have a national library.
National libraries are usually notable for their size, compared to that of other libraries in the same country. Some states which are not independent, but who wish to preserve their particular culture, have established a national library, with all the attributes of such institutions, such as legal deposit.
National libraries of Europe participate in
The European Library. This is a service of The Conference of European National Librarians (CENL).
History
The first national libraries had their origins in the royal collections of the sovereign or some other supreme body of the state.

National Library Building, Singapore.
Legal Deposit and Copyright
The principle of 'legal deposit' applies in some countries.
In the
United Kingdom the
Legal Deposit Libraries Act 2003 restates the Copyright Act of 1911, that one copy of every book published there must be sent to the national library (the
British Library); five other libraries (
Bodleian Library at
Oxford University,
Cambridge University Library,
National Library of Scotland,
Library of Trinity College (Dublin) and the
National Library of Wales) are entitled to request a free copy within one year of publication. The international nature of the book publishing industry ensures that all significant English language publications from elsewhere in the world are also included.
In the
Republic of Ireland, the ''
Copyright and Related Rights Act 2000'' specifies that one copy of every book published is to be delivered to the
National Library of Ireland, the library of Trinity College, Dublin, the library of the
University of Limerick, the library of
Dublin City University, and the
British Library. Four copies are to be delivered to the
National University of Ireland for distribution to its constituent universities. Further, on demand in writing within twelve months of publication a copy is to be delivered to the Bodleian Library, Cambridge University Library, the National Library of Scotland, and the National Library of Wales.
In
Australia, the
Copyright Act 1968 and other state Acts requires that a copy of every book published in Australia be deposited with the
National Library of Australia, the State Library for each state and certain other libraries such as Parliamentary libraries and University libraries, while in
Singapore, the ''
National Library Board Act'' requires all publishers in Singapore to deposit two copies of every publication to the
National Library Board at their own expense within four weeks from the publication date.
A similar system exists in
France with respect to the
National Library of France; a similar system also exists in
Canada with respect to its national library, known as
Library and Archives Canada, and in
Quebec, the
Bibliothèque et Archives nationales du Québec which has been entitled to two copies (for publications retailing at less than $250), or one copy (for publications retailing at $250 or above) of books published in Quebec since 1968.
Since
1661, the
Swedish Royal Library has been entitled to a copy of all works published in Sweden.
Other countries, like the
United States, do not follow this requirement. The United States does, however, require that any publisher submit two copies of a copyrightable work to
United States Copyright Office at the
Library of Congress - this is known as ''mandatory deposit''
[1] - but the Library is selective about which works it retains. The international nature of the book publishing industry ensures that all significant English language publications from elsewhere in the world are also included. It also has the
Federal depository libraries, which must receive a copy of all of the publications of the
Government Printing Office.
In addition to having a law requiring
publishers to deposit books, those countries with legal deposits usually have many other incentives for a proper and speedy deposit, such as a tie-in with laws affecting
copyright of the same documents, and/or a cataloguing- in- publication service.
About three million new English-language books are retained by the
British Library and
Library of Congress each year.
National bibliographic control
One of the main goals of a national library is fulfilling their nation's part of the common international goal of
universal bibliographic control, by ensuring the
bibliographic control of all the books or book-like documents published in that particular country or talking about that particular country, in any way.
The first part of the goal is usually achieved through the means of legal deposit laws or (as is the case of the United States) by a host of different programs such as a cataloguing in publication service. By this service, the Library of Congress gives a complete
catalogue entry of a book to any publisher who sends a final draft or some form of galley proof of a book currently in production. Other national libraries offer similar services or enforce mandatory practices similar to this.
The second part of the goal is achieved by thorough acquisition programs and
collection development policies which target book markets in other nations, and which foster international agreements with other countries with national libraries who have national bibliographic control as one of their goals. Exchange and access protocols are defined permitting these countries to read each other's catalogues, and to standardize catalogue entries, thus making it easier for each national library to become aware of every possible published document which might concern their country.
International bibliographic control
Another one of the main goals of many a national library is the "export aspect" and the collaborative sides of the universal bibliographic control of all the books in the world. This is done by the exchanges and accords mentioned in the previous section, and also by fostering the creation of standard conceptual tools such as
library classification systems and cataloguing rules. The most commonly used of these tools is the
International Standard Bibliographic Description or ISBD. It applies to books and periodicals, but also has variants for other book-like material such as the ISBD (ER) for Electronic Resources or digital documents or the ISBD(A) for Antiquarian documents, which were published after the birth of printing but before the industrial era of publishing, which started in the 1820s.
See also
★
List of national libraries
External links
★
Conference of Directors of National Libraries (CDNL)
★
Conference of European National Librarians(CENL)