Journal of African Earth Sciences
Journal of African Earth Sciences > 2007 > 48 > 5 > 301-313
Journal of African Earth Sciences > 2007 > 48 > 5 > 341-352
Journal of African Earth Sciences > 2007 > 48 > 5 > 314-328
Journal of African Earth Sciences > 2007 > 48 > 5 > 329-340