00674nam a22002057a 4500 58727 58727 BD-DhIDS 20260928123536.0 260928b1965 us||||| |||| 00| 0 eng d BD-DhIDS BD-DhIDS BD-DhIDS Eng 631.45 HEL Held, R. Burnell Soil conservation in perspective / R. Burnell Held ; Marion Clawson Baltimore : Jones Hopkins Press, 1965 Includes bibliographical references and index. Soil erosion Soil conservation Agricultural land conservation Techniques, equipment, materials Clawson, Marion ddc BK 0 0 ddc 0 0 NFIC BIDSLDC BIDSLDC GEN 2026-09-28 631.45 HEL 021546 2026-09-28 C-01 2026-09-28 BK