Preface. Measurement of matric suction using tensiometric and axis translation techniques; F.A.M. Marinho et al. Indirect measurement of suction; R. Bulut, E.C. Leong. Axis translation and negative water column techniques for suction control; S.K. Vanapalli et al. Vapour equilibrium and osmotic technique for suction control; J. Blatz et al. Mechanical testing in unsaturated soils; L.R. Hoyos et al. Laboratory hydraulic testing in unsaturated soils; F. Masrouri et al. Microstructure investigation in unsaturated soils: a review with special attention to contribution of mercury intrusion porosimetry and environmental scanning electron microscopy; E. Romero, P.H. Simms. Geoenvironmental testing; P. Delage, E. Romero. Field measurement of suction, water content, and water permeability; A. Tarantino et al. Water balance and evapotranspiration monitoring in geotechnical and geoenvironmental engineering; Y.J. Cui, J.G. Zornberg. Monitoring the performance of unsaturated soil slopes; C.W.W. Ng et al. Monitoring large scale tests for nuclear waste disposal; E.E. Alonso et al.