TY - BOOK AU - Schwab, Glenn O. TI - Elementary soil and water engineering AV - S623 .S39 U1 - 631.4 20 PY - 1957/// CY - New York PB - Wiley KW - Soil conservation KW - Hydraulic engineering N1 - CONTENTS Introduction Field notes Measurement of distance and areas Levels and leveling Topographic Surveying and mapping Rainfall and Runoff Soil Erosion Contouring, strip cropping, and Terracing Vegetated outlets and watercourses Gully control Wind erosion Control Surface drainage Land clearing Farm ponds Sprinkler irrigation Soil conservation farming ; Includes bibliographical references and index ER -