@misc{indiciaed79b8d1d96b4,
  title = {Re-greening the Sahel: Farmer-led innovation in Burkina Faso and Niger},
  author = {Chris Reij and Melinda Smale and G. Gray Tappan},
  year = {2009},
  url = {https://pubs.usgs.gov/publication/70157359},
  note = {Source identifier: 70157359}
}