Wolff, P. (1999). Natural resources and development. Vol. 49/50. A biannual collection of recent German contributions concerning the exploration and exploitation of natural resources. Focus. Water - the lifeline of our future ([1st ed.].). Institute for Scientific Co-Operation.
Chicago-Zitierstil (17. Ausg.)Wolff, Peter. Natural Resources and Development. Vol. 49/50. A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. Focus. Water - the Lifeline of Our Future. [1st ed.]. Tübingen: Institute for Scientific Co-Operation, 1999.
MLA-Zitierstil (9. Ausg.)Wolff, Peter. Natural Resources and Development. Vol. 49/50. A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. Focus. Water - the Lifeline of Our Future. [1st ed.]. Institute for Scientific Co-Operation, 1999.