Khadka, Devendra, Rajib Bhattrai, Anup G.C., and Bhoj Raj Poudel. 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.