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Muhammad Agus Syamsur Rijal, - and Hanah Masitah, - and Fanny Purvitasari, - and Retno Sari, - (2021) The effect of chitosan type and drug-chitosan ratio on physical characteristics and release profile of ketoprofen microparticles prepared by spray drying. Journal of Basic and Clinical Physiology and Pharmacology, 32 (4). pp. 669-673. ISSN 0792-6855