Hanna, Lavone .A <br/><br/>
Unit teaching in the elementary school  Social studies and related sciences 

 - Revised edition 
 - New York  Holt, Rinehart and Winston  1963 
 - xii,595  Hb  23.5 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>
<br/><br/><label>Dewey Class. No.: </label>372.83