Rumours had it that the purpose is to easily monitor any illegal publication.

An "illegal" publication with few surviving copies.

She was found guilty of distributing illegal publications.

This also led to circulation of underground, illegal publications (bibuła).

Colleges were closed, movements launched and illegal publications distributed.

"A Free Denmark") which circulated an illegal publication of the same name.

However, by 1943, many Danes were involved in underground activities ranging from producing illegal publications to spying and sabotage.

The number of indices (as well as illegal publications) increased steadily until the beginning of the sixteenth century.

This was a police state, and Erasmus wasn't just a harmless dealer in illegal publications.