- Author: Mary E. Kropp Dakubu, Tony Naden, F. A. Dolphyne, A. S. Duthie, K. C. Ford
- Language: English
- Year: 2015
- Author: M. E. Kropp Dakubu
- Language: English
- Year: 1999
- Author: Kropp Dakubu Mary Esther
- Language: English
- Year: 2005
- Author: Mary Esther Kropp Dakubu
- Language: English
- Year: 1997
- Author: M. E. Kropp Dakubu
- Language: English
- Year: 1980
- Author: Kropp Dakubu M.E.
- Language: English
- Year: 1976
- Author: Felix K. Ameka M. E. Kropp Dakubu
- Language: English
- Year: 2008