El-menshawe, S.F., Kharshoum, R.M., Hamad, D.S. and Halawa, A. 2016. EFFECT OF BIODEGRADABLE CO-POLYMERS AND DIVALENT CATIONS ON THE SUSTAINED RELEASE ABILITY OF PROPRANOLOL HYDROCHLORIDE LOADED BIOMATERIAL MICROSPHERES. International Journal of Pharmacy and Pharmaceutical Sciences. 8, 5 (May 2016), 311–317.