export(areaPoly)
export(check.state)
export(choropleth.plot)
export(choropleth)
export(choropleth.spplot)
export(city)
export(county)
export(demographics)
export(install.blk)
export(install.blkgrp)
export(install.tract)
export(install.cdp)
export(install.county)
export(MSA)
export(nameTofips)

import(sp)
import(maptools)
import(utils)
import(methods)
import(foreign)