Beauchamp, Wilbur L. <br/><br/>
Science is explaining 
Wilbur L. Beauchamp, John C. Mayfield, Paul DeHart Hurd 
 - Illinois  Scott,Foresman and Company  1968 
 - 384 p.  illus.  23 cm. 
<br/><br/><label>Dewey Class. No.: </label>372.3  / BEA