TY  - DATA
T1  - United States Geological Survey Digital Cartographic Data Standards:  Digital Line Graphs from 1:2,000,000-Scale Maps
AU  - United States Department of the Interior. United States Geological Survey
PY  - 2006
DO  - 10.3886/ICPSR08379.v1
PB  - Inter-university Consortium for Political and Social Research [distributor]
ER  -