Chemistry for secondary school level : annoted teachers' guidebook : based on modernized curricula proposed for secondary schools in ISESCO member states / M. A. Rehman, Muhammad Zafar Iqbal, Muhammad Afzal. Rehman, M. A. aut. Iqbal, Muhammad Zafar aut. Afzal, Muhammad aut. Ibne-Rasa, Khairat M. ed. Chemistry 540 REC Rabat : Islamic Educational, Scientific and Cultural Organization (ISESCO), 1998. 1998. 1998 Text xi, 281 p. : eng