TY  - RPRT
TI  - Soil-calcium depletion linked to acid rain and forest growth in the eastern United States
AU  - Gregory B. Lawrence
AU  - T.G. Huntington
PY  - 1999
DO  - 10.3133/wri984267
UR  - https://pubs.usgs.gov/publication/wri984267
ID  - wri984267
ER  -