Hartridge, H.  1886 <br/><br/>
Colours and how we see them / 
by H. Hartridge 
 - London :  G. Bell,  1949 
 - xi, 158 p. :  ill. (some col.), ports. ;  21 cm. 
<br/><br/> Mainly the author's lectures delivered at the Royal Institution at Christmas, 1946  Includes index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Color<br/>Physiological optics