Ross, Shepley L., <br/><br/>
Introduction to ordinary differential equations / 
Shepley l. Ross, with the assistance of Shepley L. Ross, II 
 - 4th ed. 
 - 607 páginas 
<br/><br/><label>ISBN: </label>0-471-09881-7 9780471098812 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuaciones diferenciales
<br/><br/><label>LC Class. No.: </label>QA372  / R66 1989