1. Urbanisation in Nigeria;Abumere,1994
2. Population and development in Africa: challenges and vision for the 21st century;Adepoju,1998
3. The effect of rapid population growth on urban development;Aprioku,1999
4. Topographic survey of Yenagoa capital territory,1997
5. Development of coastal and estuarine settlements in the Niger Delta;Bell-Gam,1990