Oteyo, John Samson. Effects of risk and promotive factors on alcohol, tobacco and other drugs behaviours : a case of secondary school students of Kiambu and Nairobi counties of Kenya / John Samson Oteyo. - Kabarak, Kenya : Kabarak University, 2013. - xvii, 153 Leaves. Thesis (PhD) - Kabarak University, 2013. Subjects--Topical Terms: Alcoholism and education.Drug abuse.