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

 -  1954 
 - Bell's Mathematical Series, Advanced Section. 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-;1