Dwyer, Robert C- <br/><br/>
Teaching children through natural mathematics/ 
Robert C. Dwyer and Jane K. Elligett. 
 - West Nyack, N.Y.  Parker  1970 
 - 212 p.:   illus.;   24 cm. 
<br/><br/><label>ISBN: </label>5138918791 
<br/><br/><label>LCCN: </label>79-091991 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics--Study and teaching (Elementary)<br/>Socially handicapped children--Education