Spatio-temporal variations of shallow and deep well groundwater nitrate concentrations along the Indus River floodplain aquifer in Pakistan

Shahrukh Nawaz Khan, Tahira Yasmeen^*, Muhammad Riaz, Muhammad Saleem Arif, Muhammad Rizwan, Shafaqat Ali, Azeem Tariq, Søren Jessen

^*Corresponding author af dette arbejde