Mário Viegas 3 - País De Abril (1974)
| Poetry by | Manuel Alegre |
| Coordination by/Coordinator | José Niza |
| Publisher | Público |
| Artist | Mário Viegas |
| Typeset by | DPI - Design, Produção Gráfica e Imagem |
| Revised by | Luís Miguel Queirós |
| Graphic Design | José Santa-Bárbara |
| Printed by | Rainho & Neves, Lda. |
| Series | Mário Viegas - Discografia Completa |
| Media Editor | José António Regada |
| Format | Paperback + CD |
| Language | Portuguese |
| Location | Portugal |
| This Edition Published | 2006 |
| Pages / Font | 72 pages |
| ISBN | 989-619-030-5 |
| SBN | 989-619-028-3 [Series] |
| Barcode | 5602227302865 |
| EAN 5 | 00003 |
| DL (Portuguese) | 239078/06 |
| Series Number | 03 |
Added by Xavier.Rafael