Contribution à l'étude du bassin houiller du Douro (NW du Portugal)
Subtitle: atlas de micropétrographie des peranthracites
By: par M.J. Lemos de Sousa.
Series: Memória - Serviços Geológicos de Portugal ;; nova sér., no. 26; Memória (Serviços Geológicos de Portugal) ;; nova sér., no. 26.
Publisher: Direcção-Geral de Geologia e Minas, Serviços Geológicos de Portugal
Published: 1978
Place of publication: Lisboa
Language: fre
Number of pages: 92
Subjects: Anthracite coal -- Duero River Valley (Spain and Portugal) -- Analysis.
Notes: Bibliography: p. [63]-84.
Summary in English and Portuguese.
Errata slip inserted.