Kaplan, Wilfred <br/><br/>
Elements of ordinary differential equations 

 - New Delhi  Addison-Wesley  1964 
 - xi, 270p  
<br/><br/> Includes bibliographical references and index 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations -- (Ordinary)<br/>Mathematics<br/>Ordinary differential equations