(1975). Natural resources and development: A biannual collection of recent German contributions concerning the exploration and exploitation of natural resources. --. Tubingen: Institute for Scientific Cooperation.
Citación estilo ChicagoNatural Resources and Development: A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. --. Tubingen: Institute for Scientific Cooperation, 1975.
Cita MLANatural Resources and Development: A Biannual Collection of Recent German Contributions Concerning the Exploration and Exploitation of Natural Resources. --. Tubingen: Institute for Scientific Cooperation, 1975.
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