has clause has website homepage GNU Project Free License Type Attribution required Open Data Commons ODC-By v1.0 http://opendatacommons.org/licenses/by/1.0/ The ODbL v1.0 allows a user of the databases to share, create and adapt the database. You must attribute any public use of the database, or works produced from the database. For redistribution of the database or derivative works, you must make the use of this license clear to others, and you must keep intact any notices on the original database. If you redistribute the database, or an adapted version of it, then you may use technological measures that restrict the work (such as DRM) as long as you also redistribute a version without such measures. http://opendatacommons.org/licenses/by/summary/, accessed 6 July 2016. Open Data Commons Attribution License (ODC-By) v1.0 Allyson Lister Distribution with notices