. Amajuoyi, Ijeoma J.; Joseph, Eme U. and Udoh, Nsisong A. (2013). Content validity of May/June West African Senior School Certificate Examination(WASSCE) Questions in Chemistry. Journal of Education and Practice 4(7), 15-21. (USA)
. Amajuoyi, Ijeoma J.; Joseph, Eme U. and Udoh, Nsisong A. (2013). Content validity of May/June West African Senior School Certificate Examination(WASSCE) Questions in Chemistry. Journal of Education and Practice 4(7), 15-21. (USA)