Washton, Nathan Seymour <br/><br/>
Teaching science in elementary and middle schools 
Nathan S. Washton. 
 - New York  D. McKay Co.  [1974] 
 - xxvi, 482 p.  illus.  24 cm. 
<br/><br/>Bibliography: p. [441]-471. 
<br/><br/><label>ISBN: </label>067930231X 
<br/><br/><label>LCCN: </label>73077364  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ciencia--Estudio y enseñanzas elemental.<br/>Science--Study and teaching (Elementary)
<br/><br/><label>LC Class. No.: </label>LB1585  / .W28 
<br/><br/><label>Dewey Class. No.: </label>372.3/5/044