Haroon, Muhammad, Muhammad Vaqas, and Muhammad Adnan Iqbal. 2012. “Comparative Study of Macro-Elements (P, Na and K) in the Edible Part of Vegetables Irrigated With Sewage, Canal and Tube Well Water”. Asian Journal of Chemistry 25 (2):835-37. https://doi.org/10.14233/ajchem.2013.12931.