Mapping and surveying of Africa south of the Sahara.   

 - London :   C. C. T. A.,   1954. 
 - 22 p. ;    24 cm. 
 - Publication ;   no.23 .
<br/><br/><label>Subjects--Geographic Terms: </label><br/> Africa, Sub-Saharan -- Maps.<br/> Africa, Sub-Saharan -- Surveys.