UDC Online – a way to learn more about the knowledge universe
![UDC Online – a way to learn more about the knowledge universe](http://knowescape.org/wp-content/uploads/2014/05/udchub_400-150x150.jpg)
According to Wikipedia “The Universal Decimal Classification (UDC) is a bibliographic and library classification developed by the Belgian bibliographers Paul Otlet and Henri La Fontaine at the end of the 19th century. UDC provides a systematic arrangement of all branches of human knowledge organized as a coherent system in which…