O Socialismo Antes de Marx
| Publisher | Fronteira |
| Coordination by/Coordinator | Serafim Ferreira |
| Translated by | Serafim Ferreira |
| Cover/Jacket Design by | Alfredo Martins |
| Publisher Series | Prática Política |
| Printed by | Tip. Serafim Mendes dos Santos, Lda |
| Format | Paperback |
| Language | Portuguese |
| Location | Portugal |
| This Edition Published | 1976-04 |
| Pages / Font | 125 pages |
| Series Number | 6 |
| Edition No. | 1 |
Added by Xavier.Rafael