Kohle, Erdöl und Erdgas.
By: Von Helmut Härtig und Rudolph Schmidt.
Contributors: Schmidt, Rudolph, engineer, joint author.
Publisher: W. Knapp
Published: 1957
Place of publication: Halle (Saale)
Language: ger
Number of pages: 282
Subjects: Coal trade.; Petroleum industry and trade.; Natural gas.
Notes: Includes bibliographies.