Nyangwe PB, Saria J. Reuse of Sludge from Wastewater Treatment Plants in Agriculture: Problem of Heavy Metals in Moshi Municipality Wastewater Treatment Plant. Tanzan. J. Sci. Technol. [Internet]. 2023Dec.31 [cited 2025May18];5(1):51-66. Available from: https://journals.out.ac.tz/index.php/tjst/article/view/1362