Research Article
Sources of Nitrate in Ground Water Aquifers of the Semiarid Region of Tanzania
Figure 2
The logarithmic distribution of (a) nitrates (ppm), (b) nitrite (ppb), and (c) ammonium (ppb) of boreholes in Singida and Manyoni towns and peri-urban areas during the dry and wet seasons.
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(b) |
(c) |