These two sites should be useful for urban planners or anyone interested in the issues surrounding development and "sprawl." The first, a report from the Economic Research Service (ERS) of the US Department of Agriculture, covers the "forces driving development, its character and impacts on agriculture and rural communities, the means available to channel and control growth, and the pros and cons of potential Federal roles." Users can download each of the report's seven chapters (and references and appendix) separately or as one document in .pdf format.