Samizdat was the underground literature of the Soviet Union.

The production and distribution of underground literature was difficult.

Under the grip of censorship of the police state, these societies used underground literature for self-analysis and self-expression.

He added: "The country has no need for underground literature.

(The library includes a huge collection of underground polemical literature as it flourished in England between 1529 and 1688).

Such lists would have been regarded as underground literature during Sir Keith Joseph's tenure.

He is best known as one of the leading authors in the 'Bizarro' movement in underground literature.

In 1985, he was fired from his job for publishing underground literature.

Recreational use of ketamine was documented in the early 1970s in underground literature (e.g.

An underground dissident literature, known as samizdat, developed during this late period.