Howorth , W. (2013). Wisdoms Law of Watercourse (6th ed.). Sweet and Maxwell.
Chicago-čujuhus (17. p.)Howorth , William. Wisdoms Law of Watercourse. 6th ed. New Delhi: Sweet and Maxwell, 2013.
MLA-čujuhus (9. p.)Howorth , William. Wisdoms Law of Watercourse. 6th ed. Sweet and Maxwell, 2013.
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