Williams, E. Brook. <br/><br/>
Air navigation :   theory and practice / 
E. Brook Williams and W. J. V. Branch. 
 - London :  Sir Isaac Pitman,   c 1965. 
 - xiii, 644 p. :  ill. ;  23 cm. 
<br/><br/> Includes index. 
<br/><br/>311  311 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Navigation (Aeronautics)
<br/><br/><label>Dewey Class. No.: </label>629.13251 / W671a