Schirren, G. <br/><br/>
Der Njandsha Und Die Hydrographischen Merkmale Afrika's / 
von G. Schirren. 
 - Riga :  N. Kymmel,  1856. 
 - 103 p. :  1 folded map ;  26 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Hydrography--Africa<br/>Discoveries in geography
<br/><br/><label>Subjects--Geographic Terms: </label><br/>Africa--Discovery and exploration