Viesssman, W., & Welty, C. (1985). Water management: Technology and institutions. Harper.
Tohutoru Kātū Chicago (17th ed.)Viesssman, Warren, me Clare Welty. Water Management: Technology and Institutions. Cambrdge: Harper, 1985.
Tohutoro MLA (9th ed.)Viesssman, Warren, me Clare Welty. Water Management: Technology and Institutions. Harper, 1985.
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