TY - BOOK AU - Cedergren,Harry R. TI - Seepage, drainage, and flow nets SN - 0471611786 (cloth) U1 - 624.15136 23 PY - 1989/// CY - New York PB - Wiley KW - Seepage KW - Drainage KW - Soil percolation N1 - Includes bibliographies and indexes ER -