The question of the origin of cleared circles as cultural resource features: weary humans or energetic rodents?

McDonald, E. V., Bacon, S. N., Schumer, R., The question of the origin of cleared circles as cultural resource features: weary humans or energetic rodents?, 80, 9th International Conference on Military Geosciences, Abstracts with Programs: Las Vegas, NV, June 19, 2011-June 24, 2011