Rapp, R., & Ernst, W. (1991). Natural resources and development. Vol. 34. A biannual collection of recent German contributions concerning the exploration and exploitation of natural resources. Institute for Scientific Co-Operation.
Chicago-Zitierstil (17. Ausg.)Rapp, Robert, und W. Ernst. Natural Resources and Development. Vol. 34. A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. Tübingen: Institute for Scientific Co-Operation, 1991.
MLA-Zitierstil (9. Ausg.)Rapp, Robert, und W. Ernst. Natural Resources and Development. Vol. 34. A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. Institute for Scientific Co-Operation, 1991.
Achtung: Diese Zitate sind unter Umständen nicht zu 100% korrekt.