TY - DATA T1 - Monitoring the Future: A Continuing Study of American Youth (12th-Grade Survey), 2009 AU - Johnston, Lloyd D. AU - Bachman, Jerald G. AU - O'Malley, Patrick M. AU - Schulenberg, John E. PY - 2010 DO - 10.3886/ICPSR28401.v1 PB - Inter-university Consortium for Political and Social Research [distributor] ER -