Larsen, Egon . <br/><br/>
A History of Invention /  Textual Documents 
Egon Larsen. 
 - 1st ed. / 
 - London :  The English Language Book Society ,  1961. 
 - 381p. :  ill ;  22cm . 
<br/><br/>Index 
<br/><br/><label>Subjects--Index Terms: </label>History-Invention Invention-History G-Mathematics 
<br/><br/><label>Dewey Class. No.: </label>509  / L 333 H