American Water Works Association & ebrary, Inc. (2010). Basic science concepts and applications: Student workbook. American Water Works Association.
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Chicago-čujuhus (17. p.)
American Water Works Association juo Inc ebrary. Basic Science Concepts and Applications: Student Workbook. Denver, Colo.: American Water Works Association, 2010.
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MLA-čujuhus (9. p.)
American Water Works Association juo Inc ebrary. Basic Science Concepts and Applications: Student Workbook. American Water Works Association, 2010.
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