Valk, A. v. d. (2006). The biology of freshwater wetlands. Oxford,New York: Oxford University Press.
शिकागो स्टाइल उद्धरणValk, Arnoud van der. The Biology of Freshwater Wetlands. Oxford,New York: Oxford University Press, 2006.
एमएलए उद्धरणValk, Arnoud van der. The Biology of Freshwater Wetlands. Oxford,New York: Oxford University Press, 2006.
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