Lansdown, Brenda- <br/><br/>
Teaching elementary science through investigation and colloquium/ 
Brenda Lansdown, Paul E. Blackwood and Paul F. Brandwein. 
 - New York  Harcourt Brace Jovanovich  1971 
 - xiv, 433 p.: illus.; 24 cm. 
<br/><br/>Bibliography: p. 401-422. 
<br/><br/><label>ISBN: </label>0155880136 
<br/><br/><label>LCCN: </label>74-157878 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Science--Study and teaching (Elementary)<br/>Concept learning