TY - GEN T1 - The Effects of Lead Exposure on Violent Crime: Evidence from U.S. Cities in the Early Twentieth Century AU - Feigenbaum, James J. AU - Muller, Christopher PY - 2014 UR - https://pdfs.semanticscholar.org/6fc2/f1b2732e327f4737fcce7b7c1ea5bea81a0d.pdf ER -