Ayres Frank. <br/><br/>
Theory &Problems Differential Equations. 

 - 1st Ed. 
 -  Sechaum Publishing Company New York.  1963 
 - 296p.  22 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Subjects--Facted Index Terms: </label><br/>MATH
<br/><br/><label>Dewey Class. No.: </label>MATH-501  / AYR