Grigg, N. S. (2009). Water resources management: : principles, regulations and cases. McGraw hill.
Dyfyniad Arddull ChicagoGrigg, Neil S. Water Resources Management: : Principles, Regulations and Cases. USA: McGraw hill, 2009.
Dyfyniad MLAGrigg, Neil S. Water Resources Management: : Principles, Regulations and Cases. McGraw hill, 2009.
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