Comments

This material is in Caves and Karst of America, ed. by A. Palmer and M.V. Palmer, National Speological Society, 2009, pp. 181-184. It is posted with permission of the NSS President Gordon Birkhimer, in a letter dated May 21, 2010.

Disciplines

Earth Sciences | Geography | Geology | Natural Resource Economics | Natural Resources and Conservation | Natural Resources Management and Policy | Physical and Environmental Geography