Spangenburg, Ray  . <br/><br/>
History of science in the nineteenth century /   Textual Documents 
Ray Spangenburg. 
 - Hyderabad :   Universities Press ,   1994. 
 - NULL ;   NULL. 
<br/><br/><label>Subjects--Index Terms: </label>History of science 
<br/><br/><label>Dewey Class. No.: </label>509  / SPA