OPTIMISATION AND VALIDATION OF HPLC METHOD FOR SIMULTANEOUS QUANTIFICATION OF RIFAMPICIN, ISONIAZID, PYRAZINAMIDE, AND ETHAMBUTOL HYDROCHLORIDE IN ANTI-TUBERCULOSIS 4-FDC TABLET. Jurnal Teknologi (Sciences & Engineering), [S. l.], v. 77, n. 1, 2015. DOI: 10.11113/jt.v77.3870. Disponível em: https://journals.utm.my/jurnalteknologi/article/view/3870.. Acesso em: 30 apr. 2025.