"study number","owner","title","investigators","doi","time period"
"02778","SAMHDA","Gambling Impact and Behavior Study, 1997-1999: [United States]","National Gambling Impact Study Commission","http://dx.doi.org/10.3886/ICPSR02778.v2","1999"
"22166","ICPSR","Washington Post Maryland Elections Poll, June 2006","The Washington Post","http://dx.doi.org/10.3886/ICPSR22166.v1","2006"
"24595","ICPSR","Washington Post Maryland Poll, October 2007 ","The Washington Post","http://dx.doi.org/10.3886/ICPSR24595.v1","2007"
"27330","ICPSR","Washington Post Maryland Poll, October 2008","The Washington Post","http://dx.doi.org/10.3886/ICPSR27330.v2","2008"