Effectiveness of control proved by a study of Chestertown, New York (IA CAT31047455)
https://commons.wikimedia.org/wiki/File:Effectiveness_of_control_proved_by_a_study_of_Chestertown,_New_York_(IA_CAT31047455).pdf
jurisdiction: United States determination method or standard: work of the federal government of the United States determination method or standard: SHA-1