The Independent Printing House CDN (better known as CDN, ) was an underground printing house (''bibuła'') operating in

Poland Poland, officially the Republic of Poland, is a country in Central Europe. It extends from the Baltic Sea in the north to the Sudetes and Carpathian Mountains in the south, bordered by Lithuania and Russia to the northeast, Belarus and Ukrai ...

between 1982 and 1990. Formed after the imposition of the

Martial Law in Poland Martial law in Poland () existed between 13 December 1981 and 22 July 1983. The Polish United Workers' Party, government of the Polish People's Republic drastically restricted everyday life by introducing martial law and a military junta in an a ...

, it focused on publishing various mostly history-related books. Apart from the modern history of Poland and

Central Europe Central Europe is a geographical region of Europe between Eastern Europe, Eastern, Southern Europe, Southern, Western Europe, Western and Northern Europe, Northern Europe. Central Europe is known for its cultural diversity; however, countries in ...

, the topics included also other topics banned by the Communist censorship, including sociology and politology. The CDN also published a number of magazines and music tapes, among them a series of cassettes featuring the songs of Jan Krzysztof Kelus. About 30 cassettes were released under the Phonographic Offices, including songs by Jan Krzysztof Kelus and Jacek Kaczmarski, performances by Jacek Fedorowicz.

See also