[To Parent Directory] 4/9/2007 6:09 PM 168921 cohen.pdf 4/21/2007 12:42 PM 515072 Enforcement.doc 4/25/2007 9:56 AM 2388021 garvie.pdf 4/21/2007 1:04 PM 1784994 Segerson-Tietenberg-1992-Structure of Penalties-JEEM.pdf