Broadhurst, J. H. (1959). The development and use of a physical method for measuring the penetration of oxygen into coals. University of Birminghaml.
Chicago-Zitierstil (17. Ausg.)Broadhurst, John Henry. The Development and Use of a Physical Method for Measuring the Penetration of Oxygen into Coals. England: University of Birminghaml, 1959.
MLA-Zitierstil (8. Ausg.)Broadhurst, John Henry. The Development and Use of a Physical Method for Measuring the Penetration of Oxygen into Coals. University of Birminghaml, 1959.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.