Karumba , Geoffrey Gichohi . <br/><br/>
Password Numerical  Problems  in Physics  :  Revised Edition. 
Geoffrey Gichohi  Karumba , Evans Arao . 
 - 1st edition.  
 - Nairobi :  Moran Publishers ;  2017 
 - 267 pages .  col . illustrations.   17cm . 
<br/><br/><label>ISBN: </label>978-9966-348-241 
<br/><br/><label>Dewey Class. No.: </label>530