"study number","owner","title","investigators","doi","time period"
"03144","ICPSR","Census of Population and Housing, 2000 [United States]:  Public Law (P.L.) 94-171 Data","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR03144.v3","2000"
"13341","ICPSR","Census of Population and Housing, 2000 [United States]:  Public Law (P.L.) 94-171 Data, National File    ","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR13341.v3","2000"
"03194","ICPSR","Census of Population and Housing, 2000 [United States]:  Summary File 1, States","United States Department of Commerce. Bureau of the Census","http://dx.doi.org/10.3886/ICPSR03194.v2","2000"