Modification of soil stucture / W. W. Emerson and R. D. Bond. International Society of Soil Science. Commission I, Soil Physics. Emerson, W. W. Bond, R. D. Soil structure congress 631.45 EMM (based on papers from a special meeting of the Commission I(soil physics) - International Soil Science Society, Adelaide, Aug. 23-27, 1976) Includes bibliographical references and index. New york : Wiley, c1978. c1978. 1978 Text xviii, 438 p. : eng