Petrovskii, I. G. <br/><br/>
Ordinary differential equations. 

 - # rev. english edition. tr. and edited /  By richard a. silverman. 
 - 232 páginas 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Ecuaciones diferenciales
<br/><br/><label>LC Class. No.: </label>QA372  / P48