Mary Elizabeth Pownall, University of York,Harry Isaacs, University of YorkISBN: 9781615040636 | PDF ISBN: 9781615040643Copyright © 2010 | 75 PagesDOI: 10.4199/C00011ED1V01Y201004DEB002Many institutions worldwide provide digital library access to Morgan & Claypool titles. You can check for personal access by clicking on the DOI link.