Piaggio, H. T. H. <br/><br/>
An elementary treatise on differential equations and their applications / 
H T H Piaggio 
 -  Revised ed. 1952 
 - London:   G. Bell,  c1920. 
 - Various Pages:  figs.;  22 cm. 
<br/><br/> Includes Index. 
<br/><br/>
<br/><br/><br/>English 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Differential equations
<br/><br/><label>Dewey Class. No.: </label>515.35/PIE