Bibliografía sobre carbón
By: por Angela Restrepo Moreno, Guillermo León Castro.
Contributors: León Castro, Guillermo.
Publisher: Asociación Nacional de Industriales, Comité Industria Carroquímica
Published: 1975
Place of publication: Medellín
Language: spa
Number of pages: 55
Subjects: Coal trade -- Bibliography -- Union lists; Catalogs, Union -- Colombia -- Medellín