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<br />. <br /> <br />o <br />00 <br />N <br />~ <br /> <br />. <br /> <br />. <br /> <br />SUMMARY (Continued) <br /> <br />Other phases of water quality, including sources of pollution, and <br />parameters such as dissolved oxygen, temperature, pH, heavy metals, <br />toxic materials, nutrients, bacteria, radioactivity, mercury, and sedi- <br />ment, are discussed. <br /> <br />3 <br />