Mapping seasonal hazards for flood management in Accra, Ghana using GIS. - Yaw A. Twumasi; Raymond Asomani-Boateng (IGARSS, 2002)

Application of GIS in community environmental education in the developing countries: the case of Ghana's forest region. - Shaibu A. Gariba; Yaw A. Twumasi (IGARSS, 2003)

Investigation of the impact of urban sprawl in three Sahelian cities using remotely-sensed information. - Andrew Manu; Yaw A. Twumasi; Tommy L. Coleman; Jean-Baptiste S. Taonda (IGARSS, 2003)

The use of GIS and satellite remote sensing techniques for the management of inland dry valley systems of the Sahel: the case of the watershed toposequence of Tanda, Niger. - Andrew Manu; Yaw A. Twumasi; Thomas L. Coleman; Ibrahim Zanguina (IGARSS, 2003)

Integration of GIS technology for urban transportation planning: the experience in Owerri, Nigeria. - Sam O. Nwaneri; Yaw A. Twumasi (IGARSS, 2003)

Management of watersheds with Landsat TM data: a case study of the Volta River in Ghana. - Yaw A. Twumasi; Andrew Manu; Tommy L. Coleman (IGARSS, 2003)

The use of satellite imagery in rangeland management: a comparative analysis of three Sahelian zones. - Yaw A. Twumasi; Andrew Manu; Thomas L. Coleman; Gandah Mohamadou; Jean-Baptiste S. Taonda (IGARSS, 2003)

Application of remote sensing and GIS technologies to assess the impact of surface mining at Tarkwa, Ghana. - Andrew Manu; Yaw A. Twumasi; Tommy L. Coleman (IGARSS, 2004)

The impact of urban growth and long-term climatic variations on the sustainable development of the City of Niamey, Niger. - Yaw A. Twumasi; Andrew Manu; Tommy L. Coleman; Ide A. Maiga (IGARSS, 2005)

GIS Based Analysis of Growth Management and Environmental Decline of the Central Mississippi Region. - Edmund C. Merem; Yaw A. Twumasi (Ann. GIS, 2005)

The use of Remote Sensing to Detect Asbestos Mining Degradation in Mafefe and Mathabatha, South Africa. - Brilliant Mareme Petja; Yaw A. Twumasi; George T. Tengbeh (IGARSS, 2006)

Comparative analysis of reflectance spectroscopy and laboratory based assessment of asbestos pollution in the rehabilitated mining environment, South Africa. - Brilliant Mareme Petja; Yaw A. Twumasi; George T. Tengbeh (IGARSS, 2007)