Except where otherwise noted within the work, this item's licence for re-use is described as (c) 2007 The University of Ulster and UHI Millennium Institute. Authors: J Casey, J Proven and D Dripps. Distributed under a Creative Commons License - Attribution 2.5 UK: Scotland You are free: to copy, distribute, display, and perform the work, to make derivative works, to make commercial use of the work under the following conditions: Attribution. You must acknowledge the names of the authors and the Copyright owners. For any reuse or distribution, you must make clear to others the license terms of this work. This licence can be found here: http://creativecommons.org/licenses/by/2.5/scotland/ NB parts of this pack and referenced works may require different conditions of use. These are indicated where possible; however it is the responsibility of the reader to comply with such requirements.