Sinha, H. C. and Sharma, J. C. <br/><br/>
Theory and Problems of Differential Equations 

 - Agra  Ram Prasad and Sons  1970 
 - 329 
<br/><br/><label>Subjects--Personal Names: </label> Mathematics 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics