Williamson, Richard E., <br/><br/>
Introduction to differential equations :  Ode, pde, and series / 
Richard E. Williamson 
 - 443 páginas 
<br/><br/><label>ISBN: </label>0134809890 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuaciones diferenciales
<br/><br/><label>LC Class. No.: </label>QA371  / W55