Seagrief, S. C <br/><br/>
The Seaweeds of the Tsitsikama Coastal National Park,  Die Seewiere van die Tsitsikama-Seekus Nasionale Park, 
illustrated by S. C. Seagrief. 
 - [Pretoria]  National Parks Board,  1967. 
 - [147] p.  col. illus.  20 cm. 
<br/><br/> English and Afrikaans. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Marine algae--South Africa--Cape of Good Hope.