Hudson, Norman Soil conservation/ Norman Hudson - London: BT Batsford, c1971 - 320 p.; 23 cm. Includes index Bibliography: p. 300 - 301 ISBN: 713405600 £ 4.50 Subjects--Topical Terms: Soil conservationSoil mechanicsSoil managementSoil pollution Dewey Class. No.: 631.45