Abstract
Human disruption of the nitrogen cycle has left signs across the Northern Hemisphere since about 1895 C.E.
| Original language | English |
|---|---|
| Pages (from-to) | 1504-1505 |
| Number of pages | 2 |
| Journal | Science |
| Volume | 334 |
| Issue number | 6062 |
| DOIs | |
| State | Published - Dec 16 2011 |