@article{316421, recid = {316421}, title = {Predicting heavy drug use results of a longitudinal study, youth characteristics describing and predicting heavy drug use by adults. [electronic resource] :}, publisher = {Executive Office of the President, Office of National Drug Control Policy,}, address = {Washington, D.C. :}, year = {2004}, note = {Title from title screen (viewed Mar. 22, 2007).}, url = {http://library.usi.edu/record/316421}, }