Probert, C. D. (1989). Pearls in the landscape: The conservation and management of ponds. Farming Press.
Citace podle Chicago (17th ed.)Probert, Christopher D. Pearls in the Landscape: The Conservation and Management of Ponds. Ipswich: Farming Press, 1989.
Citace podle MLA (8th ed.)Probert, Christopher D. Pearls in the Landscape: The Conservation and Management of Ponds. Farming Press, 1989.
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