Plum, Werner,  <br/><br/>
Natural Science and Technology on the Road to the Industrial Revolution / 
Plum, Werner.  
 - Bonn-Bad Godesberg :  Friedrich-Ebert-Stiftung ;  1974. 
 - 148 p. ; 
<br/><br/><label>Dewey Class. No.: </label>P16  / P730