Milne-Thomson, L. M. <br/><br/>
The calculus of finite differences 

 - London :  MacMillan,  1960 (c.1933) 
 - 558 p. 
<br/><br/><label>LCCN: </label>60770 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuaciones diferenciales.
<br/><br/><label>Dewey Class. No.: </label>517.21  / M5