Theiler, Gertrud; Robinson, Britha N.; Alexander, R.A.; Clark, R.; Louw, J.G.; De Kock, V.E.
(Published by The Government Printer, Pretoria, 1954)
I. The ticks from the Belgian Congo have been listed, and the commoner
species plotted on a vegetation map.
II. An attempt has been made to analyse the distribution of the commoner
species which play an economic role ...