Software Open Access
R package that provides access and tools to extract information from the Intergovernmental Organizations Database (IGOs), version 3, provided by the Correlates of War Project.
Pevehouse JC, Nordstrom T, McManus RW, Jamison AS. Tracking organizations in the world: The Correlates of War IGO Version 3.0 datasets. Journal of Peace Research. 2020;57(3):492-503. doi:10.1177/0022343319881175
Correlates of War Project. 2017. "State System Membership List, v2016." Online, http://correlatesofwar.org