TY - JOUR A1 - Bankole, A. A1 - Biddlecom, A. A1 - Guiella, G. A1 - Singh, S. A1 - Zulu, E. T1 - Sexual behavior, knowledge and information sources of very young adolescents in four sub-Saharan African countries Y1 - 2007 DO - 10.2307/25549730 JF - African Journal of Reproductive Health VL - 11 IS - 3 SP - 28 EP - -43 ER -