@misc{indiciaec0eaa478f510,
  title = {Spatial and temporal patterns of net primary productivity in the duration of 1981-2000 in Guangdong, China},
  author = {Hai-Gui Liu and Xu-Li Tang and Guo-Yi Zhou and Shu-Guang Liu},
  year = {2007},
  url = {https://pubs.usgs.gov/publication/70156756},
  note = {Source identifier: 70156756}
}