Wagner, T. (2005). Environmental scienceActive learning laboratories and applied problem setsTravis Wagner, Robert Sanfortd. John Wiley.
Chicago-viite (17. p.)Wagner, Travis. Environmental ScienceActive Learning Laboratories and Applied Problem SetsTravis Wagner, Robert Sanfortd. John Wiley, 2005.
MLA-viite (8. p.)Wagner, Travis. Environmental ScienceActive Learning Laboratories and Applied Problem SetsTravis Wagner, Robert Sanfortd. John Wiley, 2005.
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