Okello, Peter <br/><br/>
Queenex Mathematical Activities :  Pupil's Book Pre- Primary 1/ 
Peter Okello. 
 - Nairobi :  Queenex Publishers Ltd,  2018. 
 - 65 p, ; 
<br/><br/><label>ISBN: </label>9789966075727 
<br/><br/><label>Dewey Class. No.: </label>372.510