Iqbal M. Z., . (1983). PI - Accceptor Ligands. Islamabad: UGC.
Iqbal Muhammad Zafar, . 1983. PI - Accceptor Ligands. Islamabad: UGC.
Iqbal Muhammad Zafar, . PI - Accceptor Ligands. Islamabad: UGC. 1983.