Research Deserts: A Systematic Mapping Review of U.S. Rural Education Definitions and Geographies.Published in:Journal of Research in Rural Education, 2021, v. 37, n. 2, p. 1, doi. 10.26209/jrre3702By:Thier, Michael;Longhurst, Jesse M.;Grant, Phillip D.;Hocking, Jessica E.Publication type:Article