Rock Mechanics in Portugal / Manuel Rocha.
Rocha, Manuel.
Rock Mechanics in Portugal / Manuel Rocha. - Lisboa, Portugal : Laboratorio Nacional de Engenharia Civil - [28]p. - Memoria; No.299 / Laboratorio Nacional de Engenharia Civil .
Rock Mechanics in Portugal / Manuel Rocha. - Lisboa, Portugal : Laboratorio Nacional de Engenharia Civil - [28]p. - Memoria; No.299 / Laboratorio Nacional de Engenharia Civil .