Collins COBUILD English Grammar is an authoritative reference tool for advanced students and teachers of English. The result of a thorough analysis of written and spoken English, it provides a clear and detailed picture of modern English grammar. <p><center><a href="http://eltmedia.thomsonlearning.com/resource_uploads/static_marketing/1424034728/1771/int/">For a guided tour click on the image:  <img src="/images/guidedtouricon.gif" border=0></a></center>