TY - BOOK AU - Edminster, Talcott W. AU - Schwab, Glenn O. TI - Soil and water conservation engineering SN - 0471030783 U1 - 631.45 21st ed. PY - 1981/// CY - New York PB - John Wiley and Sons KW - Agricultural engineering KW - Frevert KW - Richard K KW - Soil conservation KW - Water conservation ER -