Cedergren, H. R. (1989). Seepage, drainage, and flow nets. New York: Wiley.
Dyfyniad Arddull ChicagoCedergren, Harry R. Seepage, Drainage, and Flow Nets. New York: Wiley, 1989.
Dyfyniad MLACedergren, Harry R. Seepage, Drainage, and Flow Nets. New York: Wiley, 1989.
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