http://www.loc.gov/mods/v3 http://www.loc.gov/standards/mods/v3/mods-3-2.xsd
This revised edition of Tree or Three? retains its simplicity and straightforward syllabus. The emphasis on minimal pairs, which made the original edition so popular, makes pronunciation practice light-hearted and accessible. * Clear rubrics for exercises with answer key and improved navigation make the material even more user-friendly.