Langat, A. et al. <br/><br/>
Explore Science and technology Grade 4 /  learner's Book. 

 - 1st ed. 
 - Nairobi :  Pearson Education Africa (Pty) Ltd.  2019. 
 - iv, ill. col. 140 p.  15 cm. 
<br/><br/><label>ISBN: </label>9781776003617 
<br/><br/><label>Standard Tech. Report. No.: </label>
<br/><br/><label>Dewey Class. No.: </label>500.500