Original Articles DEVELOPMENT OF A FINGERPRINT METHOD FOR ANIMAL HORN CLASSIFICATION BY LIQUID CHROMATOGRAPHY COUPLED WITH HIERARCHICAL CLUSTERING ANALYSISRui Liu, Jin-ao Duan, Sheng Guo, Jian-ming Guo, Da-wei Qian & Yu-ping Tang205 GRADIENT HPLC-DAD DETERMINATION OF THE ANTIHYPERTENSIVE MIXTURE OF AMLODIPINE BESYLATE, VALSARTAN, AND HYDROCHLOROTHIAZIDE IN COMBINED PHARMACEUTICAL TABLETSRasha A...