TY - GEN AU - Mohammad Abdallah Elsayed AU - Hayam Mahmoud Lotfy , AU - Mohammad Fayz Eltarras , AU - Mohammad Galal Elbardicy , TI - Contribution For The Analysis Of Certain Drugs Which Treat Cerebrovascular Insufficiency / PY - 2006/// CY - Cairo : PB - Mohammad Abdallah Elsayed , KW - Chromatography KW - derivativespectophotometry KW - high performance liquid N1 - Thesis (PH.D.) - Cairo University - Faculty Of Pharmacy - Department Of Analytical Chemistry; Issued also as CD N2 - Section determination of vincamine in presence of its acid degradation product by the ratio subtraction method Section determination of nicergoline and cinnarizine by the ratio subtraction and isosbestic point methods ER -