@article{Elliott Campbell2013, author = "J Elliott Campbell and David B Lobell and Robert C Genova and Andrew Zumkehr and Christopher B Field", title = "{Total abandoned agriculture as a per cent of county area}", year = "2013", month = "7", url = "https://iop.figshare.com/articles/figure/_Total_abandoned_agriculture_as_a_per_cent_of_county_area/1011710", doi = "10.6084/m9.figshare.1011710.v1" }