Um Ensaio Para A Libertação
| Book | An Essay on Liberation |
| Publisher | Bertrand Editora |
| Translated by | Maria Ondina Braga |
| Cover/Jacket Design by | José Cândido |
| Copyright Holder | Herbert Marcuse |
| Publisher Series | Informação Política |
| Printed by | Oficinas Gráficas da Livraria Bertrand (Imprensa Portugal-Brasil) |
| Format | Paperback |
| Language | Portuguese |
| Location | Portugal |
| Printed | 1977-06 |
| Copyright | 1969 |
| Pages / Font | 122 pages |
| Series Number | 19 |
Added by Xavier.Rafael