Ndua, Elizabeth. <br/><br/>
Koba the cockroach / 
E. Ndua, J. Muitungu, Leah Kariuki. 
 - Nairobi :  OUP,  2001. 
 - 16 p. 
<br/><br/><label>LC Class. No.: </label>PE1119  / .N4K63