Bibliografía sobre energética
By: por Angela Hernández de Caldas y María Teresa Ramírez Vargas.
Contributors: Ramírez Vargas, María Teresa, joint author.
Publisher: s.n.
Published: 1974
Place of publication: [s.l
Language: spa
Subjects: Power resources -- Bibliography.
Notes: Includes index.
Table of contents: title: fasc. 1. Petróleo.; title: fasc. 2. Carbón.