Morpurgo, J. E. <br/><br/>
Barnes Wallis :  a biography  / 
J. E. Morpurgo 
 - Harmondsworth :  Penguin Books,  1972 
 - xvi, 476 p. :  ill. ;  23 cm. 
<br/><br/>Includes bibliographical references. 
<br/><br/><label>ISBN: </label>0140036946 
<br/><br/><label>Subjects--Personal Names: </label><br/>Wallis, Barnes Neville, 1887-