TY  - RPRT
TI  - Assessing environmental changes in grasslands.
AU  - Charles E Mitchell
AU  - Peter B Reich
PY  - 2003
DO  - 10.1126/science.299.5614.1844
UR  - https://pubmed.ncbi.nlm.nih.gov/12649464/
ID  - 12649464
ER  -