TY  - RPRT
TI  - Imprint of oaks on nitrogen availability and δ 15 N in California grassland-savanna: A case of enhanced N inputs?
AU  - S.S. Perakis
AU  - C.H. Kellogg
PY  - 2006
DO  - 10.1007/s11258-006-9238-9
UR  - https://pubs.usgs.gov/publication/70030901
ID  - 70030901
ER  -