Bohle, Hermann,  1877-1943 <br/><br/>
Electrical photometry and illumination :  a treatise on light and its distribution, photometric apparatus and illuminating engineering / 
by Hermann Bohle ... with 200 illustrations and 35 tables 
 - 2nd ed. 
 - London :  Charles Griffin,  1925 
 - 427 p. :  ill. ;  23 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Electric lighting<br/>Photometry