6 License for the airportdb Database

This work is adapted from the Flughafen DB by Stefan Proell, Eva Zangerle, Wolfgang Gassler, which is licensed under the Creative Commons Attribution 4.0 International (CC BY 4.0) License. To view a copy of this license, visit https://creativecommons.org/licenses/by/4.0/ or send a letter to Creative Commons PO Box 1866, Mountain View, CA 94042.

FlughafenDB. (2015). Stefan Proell, Eva Zangerle, Wolfgang Gassler. www.flughafendb.cc. https://doi.org/10.5281/zenodo.3968361

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