School mathematics project :  further mathematics. 

 - Draft ed. 
 - Cambridge, UK :  The University Press,  1970-1971. 
 - 4 vols. ;  23 cm. 
<br/><br/> Vol. 3: Differential equations and circuits. 
<br/><br/><label>ISBN: </label>0521080304 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Mathematics.