Lopez, Gustavo. <br/><br/>
Partial differential equations of first order and their applications to physics   
by Gustavo Lopez 
 - Singapore  World Scientific  1999 
 - viii, 116p. 
<br/><br/><label>ISBN: </label>9810237464 
<br/><br/><label>Dewey Class. No.: </label>515.3530153  / N99