@article {12093, title = {The National Parks: Shaping the System}, year = {2005}, note = {Illustrations, Maps}, pages = {127}, publisher = {U.S. Department of the Interior}, edition = {3rd}, keywords = {History, Park development}, url = {http://www.cr.nps.gov/history/online\%5Fbooks/shaping/index.htm}, author = {McDonnell, Janet and Mackintosh, Barry} }