Center for International Earth Science Information Network (CIESIN), The Earth Institute, Columbia University, 61 Route 9W, PO Box 1000, Palisades, NY 10964 USA
Dr. Alex De Sherbinin
Center for International Earth Science Information Network (CIESIN), The Earth Institute, Columbia University, 61 Route 9W, PO Box 1000, Palisades, NY 10964 USA