LONG, CONSTANCE WAKEFORD. <br/><br/>
PIONEERS OF SCIENCE AND INVENTION / 

 - LONDON :  MACMILLAN AND CO. LIMITED,  1919. 
 - 92 p. ;  18 cm.  [?]. 
<br/><br/><label>Source: </label>
<br/><br/><label>Subjects--Topical Terms: </label><br/>Scientific Invention.
<br/><br/><label>Dewey Class. No.: </label>509