Editing National library (section)

==National bibliographic control==
[[File:National Library of Ireland 2011.JPG|left|thumb|[[National Library of Ireland]], [[Dublin]]]]
[[File:Singapore National Library-2009-06-12.jpg|left|thumb|[[National Library, Singapore|National Library Building]] in [[Singapore]]]]One of the main goals of a national library is fulfilling their nation's part of the common international goal of [[union catalog]]uing and/or [[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 [[library catalog|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.