Karumba, Geoffrey Gichohi (et al) <br/><br/>
Password Numerical Problems in Physiscs/ 

 - Nairobi :  Moran (E.A.)  Publishers Limited,  2014 
 - ill. ;287p. : 
<br/><br/><label>ISBN: </label>9789966348241 
<br/><br/><label>Dewey Class. No.: </label>500.530