برية: الفرق بين النسختين

== تعريفات ==

* [https://web.archive.org/web/20120316021404/http://www.wilderness.net/index.cfm?fuse=NWPS Detailed maps of United States wilderness designations]

* [https://web.archive.org/web/20190125031606/http://www.erraticimpact.com/~ecologic/html/nash.htm Wilderness and the American Mind] - by [[رودريك ناش]]

* [https://web.archive.org/web/20120213150611/http://www.storiesatwork.com/The-Meaning-of-Wilderness.doc The Meaning of Wilderness] - by Sandy Schuman