Piaggio H T H <br/><br/>
Elementary treatise on differential equations and 

 - 4 
 - Bombay  Orient Longmans           1960 
 - xviii,256p  cm. 
 - Bell's Mathematical Series Ed by William P Milne .
<br/><br/><label>Source: </label> General Book 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Equations
<br/><br/><label>Dewey Class. No.: </label>B33, J4;K0