S. Othman, N. and M. Khalaf, N. 2022. Determination of Doxycycline as Pure and in Pharmaceutical Preparation (Capsule) Using 4-Aminoantipyrine in Presence of Potassium Periodate. Rafidain Journal of Science. 31, 4 (Dec. 2022), 15–28. DOI:https://doi.org/10.33899/rjs.2022.176069.