Geotechnical studies of the foundation rock mass of valhelv-as Dam (Portugal) / Ricardo Oliveira.
Geotechnical studies of the foundation rock mass of valhelv-as Dam (Portugal) / Ricardo Oliveira.
- Lisboa, Portugal : Laboratorio Nacional de Engenharia Civil
- 10 p.
- Memoria; No.463 / Laboratorio Nacional de Engenharia Civil .