Brown, D. S. <br/><br/>
Freshwater snails of Africa and their medical importance / 
Seymour David Brown. 
 - London :  Taylor & Francis,  1980. 
 - x, 487 p. :  ill. ;  22 cm. 
<br/><br/> Open access. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Snails as carriers of disease.<br/>Gastropoda--Africa.<br/>Mollusks--Africa.