1. Forest Health Monitoring: 1991 Georgia Indicator Evaluation and Field Study (EPA/620/R-94/007);Alexander,1993
2. Birdsey, R.A., 1996. Carbon storage for major forest types and regions in the conterminous United States. In: Sampson, N.R., Hair, D. (Eds.), Forests and Global Change, Vol. 2. American Forests. Washington, DC, pp. 1–25.
3. Bulk density;Blake,1986
4. Texture, climate, and cultivation effects on soil organic matter content in US grassland soils;Burke;Soil Science Society of America Journal,1989
5. Handbook of Laboratory Methods for Forest Health Monitoring (Internal Document),1992