TY  - RPRT
TI  - Potential nitrogen fixation activity of different aged biological soil crusts from rehabilitated grasslands of the hilly Loess Plateau, China
AU  - Y. Zhao
AU  - M. Xu
AU  - J. Belnap
PY  - 2010
UR  - https://pubs.usgs.gov/publication/70003350
ID  - 70003350
ER  -