nl Ch 
  
ACKNOWLEDGEMENT 
"Deutsche Stiftung Fur Interna- Kaduna Polytechnic 
tionale Entwicklung'' (F. R. G.) Oak Surveys 
National Oil and Chemical Marke- Akinsehinde Lakanu & Co. 
ting Co. Kenting Africa 
Nigerian Ports Authority Map Data Services 
Nigerian Electric Power Authority Hunting Surveys (Nig.) Ltd. 
Shell Petroleum Development Co. Pan African Surveys 
(Nig.) Ltd. Master Mappers Ltd. 
Lomay Group of Companies Lagos State Ministry of Land, 
General Cil, (Nig.) Ltd. Survey and Special Duties