@article{doi:, author = {Shaban, Mohammed A. E. and Nasr, Adel Z. and El-Badry, Susan M.}, title = {Synthesis and Biological Activities of Some 1,3,4-Oxadiazoles and Bis (1,3,4-Oxadiazoles)}, journal = {Med J Islamic World Acad Sci}, volume = {4}, number = {3}, pages = {184-191}, year = {1991}, doi = {}, note ={doi: }, URL = {https://dx.doi.org/}, eprint = {https://dx.doi.org/} }