David Nulph

Defining frontier areas in the United States

J. Cromartie, Elizabeth A. Dobis, David Nulph, 2013 .

Mapping Food Deserts in the U.S.

R. Williams, M. Ploeg, David Nulph, 2011 .

Targeting Investments to Cost Effectively Restore and Protect Wetland Ecosystems: Some Economic Insights

Daniel Hellerstein, W. Crumpton, M. Ribaudo, 2015 .