title: The national-regional impact evaluation system: a spatial model of U.S. economic and demographic activity.
authors.forename: K P
authors.initials: KP
authors.lastname: Ballard
authors.forename: R M
authors.initials: RM
authors.lastname: Wendling
mesh_terms: D000569:Americas; D019049:Developed Countries; D009656:North America; D014481:United States
keywords: Americas; Developed Countries; North America; Northern America; United States