Kashfiyot
Xizmatlar
Identifikatsiya
Ishlab chiquvchilar uchun
Ekotizim
2 ta ish
Ghana Institute of Management and Public Administration
Iddisah Sulemana, Harvey S. James, J. Sanford Rikoon
Iddisah Sulemana, Abdul Malik Iddrisu, Jude E. Kyoore