Hanna, Lavone A.  <br/><br/>
Unit teaching in the elementary school / 
Lavone A Hanna, Gladys L. Potter & Neva Hagaman. 
 - New York :  Rinehart books,  c 1956. 
 - x, 592 p. :  ill. ;  24 cm. 
<br/><br/> Includes index. 
<br/><br/>340  340 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Primary education.
<br/><br/><label>Dewey Class. No.: </label>372 / H196u