Esser, Martinus Gelbaum, Bernard R, ed. series <br/><br/>
Differential equations 

 - Toronto  W B Saunders company  1968 
 - ix,249p.; 22cm. 
 - Saunders mathematics books .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Diffrential equations<br/>Mathematics<br/>Mathematics<br/>Numerical method