The P scales : assessing the progress of children with special educational needs 
written and edited by Francis Ndaji and Peter Tymms 
 - Chichester, West Sussex, U.K. ; Malden, MA  Wiley-Blackwell  2009 
 - xii, 198 p. : ill. ; 23 cm. 
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>ISBN: </label>9780470518984 
<br/><br/><label>ISSN: </label>2009021002 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Children with disabilities - Education - Great Britain<br/>Educational tests and measurements - Great Britain
<br/><br/><label>Dewey Class. No.: </label>371.9043 NDA