1. Deciduous forests of eastern North America.;Braun,1950
2. Stratégics lombriciennes.;Bouché;Ecol. Bull. (Stockholm),1977
3. Methods of soil analysis, part 2. American Society of Agronomy;Bremner,1982
4. Robust locally weighted regression and smoothing scatterplots.;Cleveland;J. Amer. Stat. Assoc.,1979
5. Physiography of the eastern United States.;Fenneman,1938