Barr , George  <br/><br/>
Science projects for young people :  

 - Dover :   London ;   1964. 
 - 153 p ;21cm .  01 
 - 2024-09-26 
<br/><br/><label>ISBN: </label>0486252353 
<br/><br/><label>Nat. Bib. No.: </label>0010675 
<br/><br/><label>Nat. Bib. Agency Control No.: </label>BAR 
<br/><br/><label>Universal Decimal Class. No.: </label>530