TY - BOOK ED - Bank of New South Wales TI - Conserve your soil: A simple guide to soil erosion U1 - 631.45 21st. ed. PY - 1939/// CY - Sydney, Australia PB - Bank of New South Wales KW - Soil science, soil erosion, menace of soil erosion, how soil erosion occurs, factors influencing erosion, control of water erosion in agricultural areas, how to prevent erosion in orchards, erosion by wind in agricultural areas, etc ER -