/460/1.hassmallThumbnailVersion/Perkins09PhD.pdf;/460/1/Perkins09PhD.pdf|/460/2.hassmallThumbnailVersion/Perkins09PhD_Appendices.pdf;/460/2/Perkins09PhD_Appendices.pdf|/style/images/fileicons/image.png;/460/3/Decl_IS_Perkins09PhD.jpg