Isaacs, Alan. <br/><br/>
Physics /  
Alan Isaacs and Valerie Pitt ; illustrated by Whitecroft Designs. 
 - [Feltham] :   Hamlyn,   [1982] 
 - 159 p. :   il. ;   18 cm. 
 - Hamlyn All-Colour Paperbacks .
 - Hamlyn All-Colour Paperbacks .