Description
Item Description:"Prepared in cooperation with the Wharton School at the University of Pennsylvania and the Penn Institute for Urban Research."
"A symposium organized by the Spatial Integration Laboratory for Urban Systems -- A Wharton School/USGS Collaborative, cosponsored by the Penn Institute for Urban Research."
Physical Description:1 online resource (iii, 21 pages) : color illustrations, color maps.
Bibliography:Includes bibliographical references (page 13).