00485nam a2200193Ia 4500 220204s9999 xx 000 0 und d 631.6.02 TRO Troeh, Frederick R Soil and water conservation Ed.2 New Jersey Prentice Hall 1980 Cropping system Soil erosion Soil survey Water erosion Water pollution Wind erosion BK 41098 41098 0 0 0 0 MAIN MAIN 2021-12-16 89.95 0 631.6.02 TRO 21390 2021-12-16 00:00:00 2022-02-14 BK