00774nam0-2200265 --450 991088987510332120241023133545.020241023d1965----kmuy0itay5050 baengUS 001yySoil conservation in perspectiveby R. Burnell Held and Marion ClawsonBaltimoreThe Johns Hopkins pressc1965XIII, 344 p.23 cm.Pedologia631.423 9z itaHeld,R. Burnell1768295Clawson,Marion33446ITUNINAREICATUNIMARCBK9910889875103321A AGR 149814178/2024FAGBCFAGBCSoil conservation in perspective4224143UNINA