Piaggio.H.T.H. <br/><br/>
An Elementary Treatise On Differential Equations. 

 - 1st Ed. 
 -  G.Bell and Sons Ltd.  1966 
 - 256+2p.  20 cm. 
<br/><br/><br/>Text in English 
<br/><br/><label>Index Terms--Genre/Form: </label><br/>MATH
<br/><br/><label>Dewey Class. No.: </label> / PIA