Nehls, Gerhard. <br/><br/>
Comparing, confusing, considering, concluding / 
Gerhard Nehls. 
 - Nairobi ,  Life Challenge Africa,  c1992. 
 - 21 p. ;  18 cm. 
<br/><br/><label>LC Class. No.: </label>BT1170  / .N44 1992