Does variation in census area confound density comparisons?

Does variation in census area confound density comparisons?

Journal of Applied Ecology, 1999

Citation

Gaston, K.J., Blackburn, T.M. & Gregory, R.D. 1999. Does variation in census area confound density comparisons?. Journal of Applied Ecology 36: 204. doi:10.1046/j.1365-2664.1999.00401.x