Khadka, D., Bhattrai, R., G.C., A., & Poudel, B. R. (2025). Spectrophotometric Determination of Nitrate and Phosphate in Selected Water Sources of Tansen . Prāgyik Prabāha, 13(1), 1–10. https://doi.org/10.3126/pp.v13i1.94729