TY - BOOK AU - Barnes, Kenneth K. AU - Edminster, Talcott W. AU - Frevert, Richard K. AU - Schwab, Glenn O. TI - Elementary soil and water engineering U1 - 631.45 21st ed. PY - 1957/// CY - New York PB - John Wiley KW - Soil conservation KW - Soil erosion KW - Water conservation N1 - Index: pp 291-6 ER -