Sir. <br/><br/>
The upper atmosphere / 
[by] H.S.W. Massey and R.L.F. Boyd. 
 - London :  Hutchinson,  [1961] 
<br/><br/> First published in 1958. 
<br/><br/>Bibliography: p. 326. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Atmosphere, Upper.<br/>Ionosphere.