Revision as of 13:30, 23 October 2014 edit 141.165.52.209 (talk) →‎History ← Previous edit		Revision as of 17:11, 1 February 2015 edit undo 68.204.228.170 (talk) Replaced a messed up roman numeral Class IV: Historic and Cultural Sites to Class VI: Historic and Cultural Sites Next edit →
Line 25: Class IV: Unique Natural Areas Class V: Primitive Areas *Class IVVI: Historic and Cultural Sites This system was in place until the early 1980s, when the recreation opportunity spectrum system replaced it.<ref name="Moore" />

Bureau of Outdoor Recreation: Difference between revisions