The geology of the Valderrueda, Tejerina, Ocejo and Sabero coal basins (Cantabrian Mountains, Spain)
By: door Harm Moed Helmig
Contributors: Rijksuniversiteit te Leiden
Publisher: J.J. Groen
Published: 1965
Place of publication: Leiden
Language: eng
Number of pages: 149
Subjects: Geology
Notes: Text in English; "Stellingen" in Dutch; summary in Spanish.

"Dit proefschrift verschijnt met gelijke paginering in de Leidse Geologische Mededelingen, reel 32."

Part of illustrative matter in pocket.

Thesis (doctoral)--Rijksuniversiteit te Leiden, 1965.

Includes bibliographical references (p. [146]-149)