There is not too much on psychiatry for developing countries, but WHO guide to Mental Health in Primary Care, Caring for children and adolescent with mental disorders , Investing in mental health are worth reading as well as World Health Report 2001 , which is specially on mental health.
Epilepsy is usually treated in psychiatric clinics in Tanzania. A good book is Epilepsy: A manual for Medical and Clinical Officers in Africa
MD, Dr.med., PhD Andrea Winkler worked 2 years in Haydom and started an Epilepsy clinic there. Read the story how the work was started there. She also made practical guidelines for diagnosing and treating epilepsy.