W. H. J. Childs <br/><br/>
Physical constants / 
W. H. J. Childs 
 -  Methuen & Co. Ltd. London 
 - 0 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Physics
<br/><br/><label>Dewey Class. No.: </label>891.43  / SHAR.4