Winterbourn, Ralph,  1909- <br/><br/>
Educating backward children in New Zealand / 
by Ralph Winterbourn. 
 - Christchurch :  Whitcombe & Tombs,  1944. 
 - 391 p. ;  23 cm. 
 - Educational research series ;  no. 20 .
 - Educational research series (New Zealand Council for Educational Research) ;  no. 20. .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Slow learning children--Education--New Zealand.<br/>Children with mental disabilities--Education--New Zealand.
<br/><br/><label>Dewey Class. No.: </label>371.920993  / WIE 1944