Stuyt, L. C. P. M. Materials for subsurface land drainage systems / L. C. P. M. Stu yt, W. Dierickx, J. Martinez Beltran. - Rome : Food and Agriculture Organisation , 2000. - xiv, 183 p. : ill. ; 30 cm. - FAO Irrigation and drainage paper ; no. 60. . Includes bibliographical references (p. 119-130) ISBN: 9251044260 Subjects--Topical Terms: Drainage materials.--------